# Cables Published articles for Cables. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Adafruit QT PY ESP32-C3 Case - Snap-Shut Top with Reset Button Access #3DThursday #3DPrinting DevFeed: [Adafruit QT PY ESP32-C3 Case - Snap-Shut Top with Reset Button Access #3DThursday #3DPrinting]() Original publisher: [Read original article]() Author: Pedro Published: 2026-11-05T17:00:28Z Content type: article Language: en Sources: [Adafruit Industries]() Topics: [ESP32-C3](), [3D]() Tags: [3d-printed](), [3d-printing](), [3dprinting](), [3dthursday](), [adafruit](), [board](), [button](), [cables](), [circuitpython](), [diy](), [ecosystem](), [electronics](), [esp32](), [esp32-c3](), [external](), [making](), [microcontroller](), [printing](), [sensor](), [sensors](), [stemma](), [usb-c]() ### AI overview This enclosure is designed for one Adafruit QT PY ESP32-C3 board with a USB-C connector. Its top snaps shut and provides two button cutouts, including access to the reset/PIN9 button. A rear slit allows cables to pass through; the author used it to connect external BME280 sensors. The QT STEMMA version can plug into a STEMMA board. ### Source excerpt JeremyLaurens_210732 shares: An enclosure for a single Adafruit QT PY ESP32-C3 board with a USB-C connector. Top snaps shut with two button cutouts -- one for the reset/PIN9 button. Small slit in the back for cables (used by the author to wire in external BME280 sensors). The QT STEMMA version can plug into a STEMMA [...] ## Sweary plots, DOOM maps, postcards and more #ArtTuesday DevFeed: [Sweary plots, DOOM maps, postcards and more #ArtTuesday]() Original publisher: [Read original article]() Author: Anne Barela Published: 2026-11-03T14:05:30Z Content type: article Language: en Sources: [Adafruit Industries]() Topics: [generative art](), [3D]() Tags: [3d](), [accordion](), [art](), [arttuesday](), [availability](), [cables](), [generative](), [generative-art](), [handwriting](), [paper](), [pen-plotting](), [plotting](), [printing](), [projects](), [work]() ### AI overview Daniel Catt's generative handwriting plotter builds organic page structures in five stages: it lays out rows and interacting lines, grows new lines from that skeleton, removes sections with Perlin-noise-distorted rectangles to restore negative space, fills the remaining lines with random or supplied letters, and adds cables between letter clusters. Catt says he wrote the code by hand, having previously built the components separately. He has used the results on postcards and accordion books and wants to scale them up onto Saunders Waterford watercolour paper. The text also briefly mentions his studio's 3D clay printing, described as pen plotting with a Z-axis. ### Source excerpt Daniel Catt writes in his newsletter about a new generative system for plotted handwriting art, one that moves away from the rigid magazine style grids he has used before and toward something more organic. The system runs in five stages. "Foundation" splits the page into 3 to 24 rows and draws horizontal lines that attract [...] ## NaaS hasn't lived up to the hype. Is it still worth it? DevFeed: [NaaS hasn't lived up to the hype. Is it still worth it?]() Original publisher: [Read original article]() Author: Maria Korolov Published: 2026-11-02T13:37:45Z Content type: comparison Language: en Sources: [Network World]() Topics: [Cloud Networking](), [Managed Services](), [network device monitoring](), [upgrade]() Tags: [2021](), [2025](), [2026](), [access-points](), [adoption](), [aging](), [cables](), [connectivity](), [coverage](), [deep](), [edition-us](), [end-of-life](), [enterprise](), [enterprise-networking](), [equipment](), [gartner](), [hardware](), [it](), [lan](), [language-en](), [latest](), [leadership](), [networking](), [storytype-feature]() ### AI overview NaaS adoption remains below Gartner's 2021 forecast: its 2026 networking hype cycle puts market penetration at 1%-5%. At Rivers School, Meter replaced a piecemeal LAN upgrade with a turnkey service: it surveyed, designed, installed, and now maintains Meter-owned equipment. The school reports better coverage, performance, security, visibility, and easier support, with included service calls and potential long-term savings. Outdoor coverage is limited because Meter bills by square footage. Gartner cautions that consumption pricing can be unpredictable, NaaS may cost more than capital-funded networks, and supplied hardware creates platform lock-in; a working network may not justify replacement. Analysts also cite campus hardware needs, reduced flexibility, unclear definitions, and risk of billing surprises. The excerpt distinguishes more-developed WAN offerings from full traditional WAN capabilities and notes that NaaS adoption and maturity figures vary by survey measure. ### Source excerpt In 2021, Gartner expected a promising future for Network as a Service (NaaS). At the time, adoption accounted for less than 1% of enterprises, and Gartner expected that number to rise to 15% by 2024. Instead, in Gartner's latest hype cycle for networking, NaaS is still at 1% to 5% market penetration. That's short of Gartner's earlier expectations. In fact, Gartner places NaaS deep in the "trough of disillusionment" in its 2026 Hype Cycle for Enterprise Networking. Making the case for NaaS NaaS has been working out for the Rivers School, which has a 55-acre campus in eastern Massachusetts that's home to a preparatory school and a music conservatory, totaling more than 1,700 students combined. John Adams, Rivers' director of technology and innovation, came on board in the summer of 2024, and upgrading the school's aging LAN was his top priority. At the time, the school had a network with 115 Wi-Fi access points, plus switches, routers, cables, and two ISPs providing connectivity. "Our entire switch inventory needed to be replaced, and about one-third of the access points were end-of-life as well," Adams says. "I made a pitch to our senior leadership that we needed to make an update," he says. After the board approved the request and allocated a budget, Adams went out to research options. The initial plan was to upgrade the equipment the school already had starting with the most out-of-date hardware first, improve coverage and performance, improve the security, and to try to do it all without adding headcount. There was one employee managing the network, with nobody else on the five-person technology team qualified to help, so, ideally, the new system would also allow someone to step in and take on some of the work if necessary. Instead of a piecemeal update to the existing setup, Rivers opted for NaaS, picking one of the two major vendors in the space, Meter. The final decision was made in late spring of 2025, and the new network was up and running by the time classes ## This Gorgeous Walnut PC Build Was Seven Years in the Making DevFeed: [This Gorgeous Walnut PC Build Was Seven Years in the Making]() Original publisher: [Read original article]() Author: Jeremy Published: 2026-11-01T15:15:15Z Content type: news Language: en Sources: [Noted]() Topics: [pc](), [Image]() Tags: [2019](), [4k](), [aluminum](), [amd](), [amd-ryzen](), [beautiful](), [benchmark](), [box](), [build](), [builder](), [building](), [builds](), [cables](), [card](), [community](), [computer](), [computer-hardware](), [cooling](), [enthusiast](), [pc](), [walnut]() ### AI overview Heartwood is a custom PC built over roughly 300-400 hours across seven years, combining walnut panels with the aluminum structure of an In Win 909. It pairs an RTX 5090 with an AMD Ryzen 7 9800X3D. To keep the case nearly free of visible cables and cooling lines, the builder routed them through a custom desk and floor to a basement MO-RA 400 radiator with four 200 mm Noctua fans and two D5 pumps, connected by about 30 feet of tubing. The setup moves radiator heat and much of its noise out of the office, but makes the computer difficult to move and raises maintenance and leak concerns. The builder acknowledges those practical tradeoffs; the project prioritizes a distinctive furniture-like appearance over convenience. ### Source excerpt A PC enthusiast spent seven years creating Heartwood, a stunning walnut computer with almost invisible wiring and basement cooling. ## New Guide! NeoPixel Brick Holiday Wreath DevFeed: [New Guide! NeoPixel Brick Holiday Wreath]() Original publisher: [Read original article]() Author: Noe Ruiz Published: 2026-10-29T14:00:10Z Content type: tutorial Language: en Sources: [Adafruit Industries]() Topics: [WLED](), [3D]() Tags: [3d](), [3d-printed](), [3d-printing](), [adafruit](), [build](), [cables](), [can](), [colors](), [feature](), [guide](), [holiday](), [leds](), [lights](), [matching](), [mini](), [modular](), [motion](), [neopixel](), [parts](), [project](), [required]() ### AI overview The wreath uses an Adafruit Sparkle Motion Mini, 12 NeoPixel JST breakouts and matching cables, so assembly requires no soldering. Its 3D printed branches snap together, with modular pieces that diffuse the LEDs; printing the parts in different colors allows themed designs. Install free WLED software for pulsing, sparkling and fading animations, controlled over WiFi from a mobile device or computer. The Mini's built-in I2S microphone can enable audio reactive effects. ### Source excerpt Build a holiday inspired wreath that lights up with animated NeoPixel LEDs! This project uses the Adafruit Sparkle Motion Mini, 12 NeoPixel JST breakouts and matching cables so there's no soldering required. The 3D printed branches snap together and feature modular pieces that diffuse the LEDs. You can 3D print the parts in different colors [...] ## Global Internet infrastructure at NANOG 98 DevFeed: [Global Internet infrastructure at NANOG 98]() Original publisher: [Read original article]() Author: Geoff Huston Published: 2026-10-28T05:18:13Z Content type: article Language: en Sources: [APNIC Blog]() Topics: [Internet Trends](), [Internet](), [communications](), [centralization](), [digital sovereignty]() Tags: [amazon](), [architecture](), [bandwidth](), [broadband](), [cables](), [capacity](), [capital](), [centralization](), [competition](), [global](), [hyperscaler](), [infrastructure](), [internet](), [internet-infrastructure](), [investment](), [leo](), [nanog](), [networks](), [satellite](), [submarine-cable](), [systems](), [tech-matters]() ### AI overview International bandwidth demand is still growing about 30% annually, even as growth rates decline; the article says annual added capacity is now about 2 Pbps and could exceed 10 Pbps by 2035. Aging cables, demand, and route diversity are driving an estimated USD 5-6 billion in annual new cable investment for 2026-2029. Google, Meta, Microsoft, and Amazon fund 38% of cable projects for private use and invest in another 25% through consortia; the transatlantic route is 85% privately hyperscaler-funded. The article links this shift to hyperscalers' capital and the risks of consortium dependence, while noting concerns about foreign ownership and repair-vessel control. LEO systems use large satellite constellations and inter-satellite laser links to provide last-mile service in remote locations. The text presents LEO and submarine cables as complementary: LEO serves specialized access needs, while cables carry bulk data in core networks. It attributes Starlink's reported high returns to its retail position and limited competition, and says Amazon's entry could challenge that position. ### Source excerpt Hyperscaler investment in submarine cables and the rise of LEO satellite systems are reshaping who builds, owns, and operates the networks that underpin global connectivity. ## IBM connects quantum chips with 'quantum channels' at 99% accuracy DevFeed: [IBM connects quantum chips with 'quantum channels' at 99% accuracy]() Original publisher: [Read original article]() Author: Maria Korolov Published: 2026-10-27T22:55:00Z Content type: news Language: en Sources: [Network World]() Topics: [Quantum Computing](), [ibm]() Tags: [arvind-krishna](), [at-t](), [cables](), [ceo](), [chips](), [computer](), [computers](), [connectors](), [cooling](), [cycles](), [data-center](), [data-center-high-performance-computing](), [edition-us](), [entanglement](), [enterprise](), [first](), [general-motors](), [hardware](), [high-performance-computing](), [ibm](), [language-en](), [linking](), [milestone](), [multiple](), [quantum](), [storytype-news]() ### AI overview IBM reports connecting two 120-qubit superconducting chips through four l-couplers, each using a 31.5-inch superconducting cable. The four quantum channels achieved an average transfer fidelity of 99%, transmitted entanglement, and remained operational through three warming and cooling cycles. The researchers say earlier attempts could not support multiple connections between large superconducting processors. The approach is compatible with IBM Quantum Nighthawk and is planned for use with the fault-tolerant IBM Quantum Starling, targeted for 2029. ### Source excerpt IBM has reached a critical milestone for scaling quantum computers, the company announced. According to a research paper published last week, superconducting processors have been connected for the first time using multiple quantum channels with an average transfer fidelity of 99%. In addition to trying to get more qubits on a single chip, quantum computers can also be scaled up by linking multiple chips together. In this case, researchers linked two 120-qubit chips with four connectors--that they called l-couplers--each with a superconducting cable 31.5 inches long. These cables stayed operational through three cycles of warming up and cooling down, and were also able to transmit quantum entanglement between the chips. Previous attempts to do this could not support multiple connections between large superconducting qubit processors, the researchers said. The new approach is compatible with IBM's Quantum Nighthawk and will also be compatible with the fault-tolerant IBM Quantum Starling computer, planned for 2029. The same day that IBM released the research, IBM CEO Arvind Krishna told investors that three independent demonstrations achieved quantum advantage on IBM hardware this past summer, and that it had signed 16 enterprise engagements so far this year, including with AT&T and General Motors. ## Highway Thieves Are Spoofing GPS To Steal Millions In Data Center-Bound Cargo DevFeed: [Highway Thieves Are Spoofing GPS To Steal Millions In Data Center-Bound Cargo]() Original publisher: [Read original article]() Author: BeauHD Published: 2026-10-26T18:00:00Z Content type: news Language: en Sources: [Slashdot]() Topics: [fake account fraud](), [argamal](), [data]() Tags: [ai](), [ai-industry](), [bitcoin](), [cables](), [chips](), [cooling](), [copper](), [crime](), [data-center](), [data-center-cooling](), [driver](), [equipment](), [fake](), [gps](), [gps-tracking](), [highway](), [ids](), [install](), [june](), [memory-chips](), [spoofing]() ### AI overview Thieves reportedly stole more than $100 million in data center freight since June using a coordinated cargo-fraud scheme. They hack freight brokers' accounts, post fake loads to attract trucking companies, and use malicious links to take over victims' accounts and bid on real shipments. Cargo is collected by unwitting drivers or accomplices hired with forged IDs, then transferred to the thieves; GPS coordinates were spoofed in at least one major theft. Reported targets include servers, fiber-optic cables, chips, copper wire, and mining machines, sometimes mixed with unrelated freight. Some goods were recovered, but equipment from two of the largest thefts cited remained missing. The excerpt describes the reported cases and tactics; it does not establish the full scale or frequency of the crimes. ### Source excerpt Highway thieves have stolen more than $100 million in data center equipment since June, employing increasingly sophisticated tactics such as forging driver IDs and spoofing GPS tracking systems. NBC News (paywalled) reports that thieves have "made away with more than $100 million in data center freight." Ars Technica reports: Here's how they said thieves get away with it: First, thieves hack freight brokers' accounts on shipment-listing websites and post fake shipments to lure real bids, then send a malicious link to any trucking companies that respond. Once victims click, thieves install software to take control of their accounts and start bidding on real shipments. Sometimes, a real delivery driver is hired to collect the cargo, unaware of the scam, and other times fake driver's licenses are used to get accomplices hired. Either way, the goods are eventually transferred to a driver working with the thieves to resell the gear, and, in one of the largest thefts, tracking coordinates were spoofed to prevent digital monitoring. Equipment commonly targeted includes "servers, fiber-optic cables, computer memory chips, copper wires, and bitcoin mining machines," NBC News reported. Some trailers hit seem to be carrying only data center equipment, like two stolen freights found in Illinois. The Cook County Sheriff's Office estimated those contained $300,000 worth of copper wire spools and about $1 million in "custom-made data center modular power solutions equipment," NBC News reported. Other trucks impacted were carrying additional freight, like a Los Angeles County Sheriff's Department case where "data center cooling equipment" bound for Deepcool AI was recovered among nicotine pouches, televisions, shoes, printers, speakers, and skin care cosmetics. Experts worry that means Americans may be broadly harmed by the thefts, not just the AI industry. While some stolen goods have been recovered, in two of the largest thefts that NBC News found, none of the equipment was found ## UK proposes 14-year jail terms for subsea cable saboteurs DevFeed: [UK proposes 14-year jail terms for subsea cable saboteurs]() Original publisher: [Read original article]() Author: Sinisa Markovic Published: 2026-10-23T12:37:41Z Content type: news Language: en Sources: [Help Net Security]() Topics: [national security](), [Security](), [Resilience]() Tags: [cables](), [critical-infrastructure](), [energy](), [energy-infrastructure](), [eu](), [government](), [hardware](), [infrastructure](), [legislation](), [national-security](), [network](), [news](), [operators](), [regulatory](), [repair](), [requirements](), [resilience](), [risk](), [security](), [sensitive-data](), [supply-chain](), [uk](), [white-paper]() ### AI overview The UK government's White Paper proposes updating laws for subsea cables and pipelines, citing their importance to data and energy supplies and concerns including suspicious Russian activity. Intentional damage to undersea energy or telecoms infrastructure could carry up to 14 years in prison; damage caused recklessly or negligently would also be an offence. Ship owners whose vessels damage infrastructure could face unlimited fines. Subsea telecoms cable companies would have new security and resilience duties, while the Secretary of State could direct providers of cable infrastructure and repair services when necessary and proportionate for national security. The proposals also create a regulatory regime for fibre optic sensing on subsea cables, which can detect activity at sea but may expose sensitive data. The White Paper opens a 12-week public consultation; the measures are proposals, not established law. ### Source excerpt Damaging a cable on the seabed off the UK coast could soon cost someone 14 years of their life behind bars, under plans the British government published this week. The proposal comes from a White Paper by the Department for Digital, Culture, Media and Sport that would update laws protecting undersea cables and pipelines, some of which date back 140 years. The plans include unlimited fines for ship owners whose vessels damage the infrastructure, new ... More -> The post UK proposes 14-year jail terms for subsea cable saboteurs appeared first on Help Net Security. ## How Mixx Technologies Is Lighting The Way To Fully Optical Scale-up Networks DevFeed: [How Mixx Technologies Is Lighting The Way To Fully Optical Scale-up Networks]() Original publisher: [Read original article]() Author: Tobias Mann Published: 2026-10-22T20:14:12Z Content type: news Language: en Sources: [The Next Platform: In-depth coverage of high end computing]() Topics: [communications](), [NVLink](), [NVIDIA Vera Rubin](), [networking news]() Tags: [2023](), [3d](), [about](), [accelerators](), [adoption](), [cables](), [connect](), [copper](), [datacenter](), [form](), [gpu](), [lighting](), [like](), [modern](), [networks](), [nvidia](), [optical-interconnects](), [photonics](), [rack](), [scale](), [scale-up](), [systems](), [technologies](), [up](), [with]() ### AI overview Mixx Technologies is pursuing a staged path to optical scale-up networks, starting with dense fiber connections and moving toward near-packaged optics (NPO), co-packaged optics (CPO), optical circuit switches (OCS), and software to manage connections. Its SxC connector packs 64 fibers into one connector; the company says it can fit 1,000 fibers in 800 mm². Mixx plans an NPO module around 2028-29, with CPO later, after NPO adoption helps establish the approach. NPO offers a potentially refurbishable engine if it fails, while CPO brings optics closer to the chip and could avoid copper reach limits and enable higher port counts. The article says large optical fabrics will still need dense fiber attachment and high-radix OCS hardware; reconfiguring OCS drops connections, so changes need scheduling. Mixx's fully optical vision remains a longer-term goal, with product timing tied to market demand. ### Source excerpt Modern rack systems like Nvidia's NV72 are packed with miles of copper flyover cables which form the ... ## New Guide! 4-Port USB Hub for IKEA MITTZON Desk DevFeed: [New Guide! 4-Port USB Hub for IKEA MITTZON Desk]() Original publisher: [Read original article]() Author: Noe Ruiz Published: 2026-10-22T14:00:49Z Content type: article Language: en Sources: [Adafruit Industries]() Topics: [USB](), [3D]() Tags: [3d](), [3d-printed](), [3d-printing](), [adafruit](), [adafruit-learning-system](), [adapters](), [bits](), [cables](), [color](), [desk](), [diy](), [embedding](), [guide](), [hub](), [ikea](), [module](), [port](), [power](), [power-strip](), [usb]() ### AI overview The project replaces the IKEA MITTZON desk's two-port KOPPLA module with an integrated four-port USB hub built around Adafruit's CH334F breakout. A 3D-printed panel cover fits the desk and includes a tray for small items such as adapters and cables. The source says the open-source design files can be modified to add components, and the panel can be printed in a chosen color. ### Source excerpt Learn Guide: https://learn.adafruit.com/4-port-usb-hub-for-ikea-mittzon-desk The IKEA MITTZON desk features a plug-in module that is originally designed to fit the KOPPLA power strip. It's a neat idea but it only features 2x USB ports. Wouldn't it be great if it had MORE?! The Adafruit CH334F 4-port USB hub breakout is perfect for embedding a DIY USB hub [...] ## Achieve Productive AI Capacity Faster and More Predictably with NVIDIA DSX POD DevFeed: [Achieve Productive AI Capacity Faster and More Predictably with NVIDIA DSX POD]() Original publisher: [Read original article]() Author: Tanya Lenz Published: 2026-10-21T09:35:32Z Content type: article Language: en Sources: [NVIDIA Developer](), [NVIDIA Technical Blog]() Topics: [NVIDIA DSX](), [AI Infrastructure](), [NVIDIA Vera Rubin](), [implementation](), [Network]() Tags: [ai](), [ai-factories](), [ai-factory](), [ai-infrastructure](), [ai-workloads](), [architecture](), [cables](), [cabling](), [cluster](), [compute](), [connect](), [connectivity](), [container](), [containers](), [control](), [data-center-cloud](), [dsx](), [dsx-pod](), [featured](), [gtc-berlin-2026](), [nvidia](), [nvidia-dsx](), [token](), [top-stories](), [vera-rubin]() ### AI overview NVIDIA DSX POD is a standardized, factory-built AI factory design for NVIDIA Vera Rubin rack-scale systems. It shifts repeatable integration and functional validation of compute, networking, storage, power, cooling, cabling, and controls into the factory, so site work can focus on placement, external hookups, and commissioning. Site preparation can proceed in parallel with manufacturing, which is intended to reduce field integration and improve schedule predictability; the article does not quantify those gains. The design specifies an 800 VDC container power interface, while partners engineer upstream site power to local conditions. It also defines internal liquid-cooling and network interfaces, factory checks, and transport requirements. DSX POD is one deployment option: conventional construction and onsite integration remain available, and the design does not remove the need for prepared site infrastructure or onsite work. NVIDIA provides the engineering foundation, while ecosystem partners customize, build, deploy, and support implementations. ### Source excerpt AI factories turn energy into intelligence. But before an AI workload can produce its first token, operators must bring an interconnected system of compute,... ## RTX 5090 owner says PNY denied a warranty claim because they didn't use the included cable or adapter DevFeed: [RTX 5090 owner says PNY denied a warranty claim because they didn't use the included cable or adapter]() Original publisher: [Read original article]() Author: Rob Thubron Published: 2026-09-25T11:54:00Z Content type: news Language: en Sources: [TechSpot]() Topics: [GPU](), [pc]() Tags: [adapter](), [cables](), [gaming](), [gpu](), [graphics-card](), [hardware](), [melting](), [nvidia](), [pc](), [pny](), [rtx-5090](), [warranty]() ### AI overview A PNY RTX 5090 owner says the graphics card failed after the 12V-2x6 cable melted at both ends. PNY denied the warranty claim, stating that only its included cable or adapter was covered, although the company's current warranty policy and installation guide reportedly do not clearly state that requirement. ### Source excerpt Redditor Melodic_Initial_1767 writes that their PNY RTX 5090 purchased last September died last month. Both the PSU and card ends of the 12VHPWR cable melted - something we've seen several times before - and the PC no longer recognizes the GPU. Read Entire Article ## Inside Petal: Building the World's First Petabit-Class Transoceanic Subsea Cable DevFeed: [Inside Petal: Building the World's First Petabit-Class Transoceanic Subsea Cable]() Original publisher: [Read original article]() Author: Elizabeth Rivera Hartling; Pascal Pecci; Matthew Mitchell Published: 2026-09-21T12:00:00Z Content type: release Language: en Sources: [Engineering at Meta]() Topics: [Meta](), [Network](), [Internet](), [communications](), [Resilience]() Tags: [cables](), [capacity](), [communications](), [connectivity](), [fiber](), [future-proof](), [infrastructure](), [internet](), [meta](), [multi-core-fiber](), [network](), [partnership](), [resiliency](), [technology](), [traffic](), [transmission]() ### AI overview Meta announces Petal, a planned transoceanic subsea cable connecting France and the United States. Expected to enter service in 2029, it is designed to deliver 1 petabit per second and deploy multi-core fiber technology at scale. ### Source excerpt Petal, the next step in Meta's subsea innovation, will be the first subsea cable to deliver petabit capacity at transoceanic distances, connecting France and the United States over approximately 7,000 km (4,300 mi). Expected to enter service in 2029, it will be the first subsea cable system to deploy multi-core fiber technology at scale, doubling [...] Read More... The post Inside Petal: Building the World's First Petabit-Class Transoceanic Subsea Cable appeared first on Engineering at Meta. ## Using the OSI Model for Effective Production Issue Debugging DevFeed: [Using the OSI Model for Effective Production Issue Debugging]() Original publisher: [Read original article]() Author: Kamal Kumar Published: 2025-08-28T17:37:45Z Content type: article Language: en Sources: [Housing.com]() Topics: [OSI model for DevOps](), [Network](), [observability](), [reliability-engineering]() Tags: [alert](), [alerts](), [apis](), [application](), [applications](), [authentication](), [authentication-issues](), [business-logic](), [cables](), [communication](), [configuration](), [connectivity](), [debugging](), [devops](), [encryption](), [errors](), [firewalls](), [gateway](), [osi-model](), [production](), [production-debugging](), [production-issue](), [rca](), [sre]() ### AI overview The author uses the OSI model to structure production root-cause analysis. For network or gateway errors such as 502 and 504, they start at the lower layers--Physical through Transport--and check connectivity, firewalls, routing, and load balancers. For application or client errors such as 500, 503, and 404, they start at the upper layers--Application through Session--and inspect service logs, APIs, authentication, and configuration. The author says this layer-by-layer approach helps catch both network and application issues and can reduce MTTR and improve RCA reports. ### Source excerpt In production environments, debugging alerts can sometimes feel like finding a needle in a haystack. Over the years, I've found the OSI (Open Systems Interconnection) model to be a reliable guide during Root Cause Analysis (RCA) of production issues. What is the OSI Model? The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers: Physical Layer -- Hardware, cables, switches Data Link Layer -- MAC addresses, switches, network topology Network Layer -- IP addressing, routing Transport Layer -- TCP/UDP, ports, session reliability Session Layer -- Session management, authentication Presentation Layer -- Data translation, encryption Application Layer -- APIs, web servers, applications How I Use OSI Layers in RCA: When I debug production alerts, I follow different approaches depending on the type of error: Network / Gateway Errors (e.g., 502, 504): These errors usually indicate communication issues between services. I start from the bottom layers (Physical -> Network -> Transport) to check connectivity, firewalls, routing, or load balancers. Application / Client Errors (e.g., 500, 503, 404): These errors generally originate from the application or business logic. I start from the top layers (Application -> Presentation -> Session) to check service logs, APIs, authentication issues, or configuration problems. Why this approach works: Following the OSI model provides a structured, layer-by-layer method for troubleshooting, ensuring that we don't miss low-level network issues or high-level application errors. It helps reduce mean time to resolution (MTTR) and improves the quality of RCA reports. Takeaway: The OSI model is not just a theoretical concept -- it's a practical tool that can guide engineers through complex production debugging. Next time you face a tricky alert, try mapping it to the OSI layers, and you might find the root cause faster than you think. Using the OSI Model for Effective Production Issue ## How a Datadog Engineer Connected Sailboat Instruments to Datadog DevFeed: [How a Datadog Engineer Connected Sailboat Instruments to Datadog]() Original publisher: [Read original article]() Author: Wouter de Bie Published: 2020-09-23T00:00:00Z Content type: article Language: en Sources: [Datadog]() Topics: [data streams monitoring](), [Publish-subscribe pattern](), [Open Source](), [datadog agent]() Tags: [adapter](), [cables](), [can-bus](), [datadog](), [electronics](), [engineering](), [iot]() ### AI overview A Datadog engineering director describes connecting sailboat instruments through an NMEA 2000 bus, collecting their data with a Raspberry Pi and Signal K, and sending it to Datadog through a plugin he created. The resulting dashboards helped him analyze sailing routes and conditions alongside safety data. ### Source excerpt How I used Datadog to become a better sailor. ## When Your Brand New Windows PC Goes into a The Computer Restarted Unexpectedly Loop DevFeed: [When Your Brand New Windows PC Goes into a The Computer Restarted Unexpectedly Loop]() Original publisher: [Read original article]() Author: Fuzzygroup Published: 2019-12-25T00:00:00Z Content type: tutorial Language: en Sources: [Scott Johnson]() Topics: [Windows](), [pc](), [boot]() Tags: [boot](), [cables](), [christmas](), [command](), [computer](), [dialog](), [dos](), [failed](), [first](), [gaming](), [good](), [graphics](), [graphics-card](), [key](), [learn](), [motherboard](), [note](), [order](), [pc](), [windows]() ### AI overview The author fixed a new Windows PC stuck at "The Computer Restarted Unexpectedly" by restarting Windows setup from scratch. After trying hardware and boot checks, they suspected a previous setup attempt had been left incomplete. Their steps: press Shift+F10, open Regedit, go to HKLM/SYSTEM/SETUP/STATUS/ChildCompletion, change setup.exe from 1 to 3, exit Regedit and the command prompt, then click OK to reboot and continue Windows setup. The incomplete prior setup is the author's suspicion, not a confirmed diagnosis. ### Source excerpt Note: This blog post is for Max, my youngest son, so he can learn what I did to fix this problem. So my youngest son got a new Windows gaming PC for this Christmas from his Grandmother (thank you Nanny) and when he started it up, all he saw was this: The normal diagnostic steps of: Pull the graphics card and use motherboard graphics Check that the RAM is seated Double check all cables are connected Change the boot order options and make sure that the right boot device (SSD) is used We ordered this from Best Buy and my suspicion is that someone had previously bought this computer and partially run thru Windows setup and failed. Since the device is brand new, all we need to do is trick Windows into running through the setup process from scratch. Here's how I solved this: Press shift+F10 to get a command prompt. Clap loudly for seeing a DOS prompt for the first time in ages. Type regedit and press enter. Navigate to this key: HKLM/SYSTEM/SETUP/STATUS/ChildCompletion Click on setup.exe and change the value from 1 to 3. Press ALT+F and select Exit from the File menu to exit RegEdit. Exit out of the command prompt by typing exit and pressing ENTER. Reboot the computer by clicking ok at the "The Computer Restarted Unexpectedly..." dialog box. Run through the Windows setup process from scratch and all should be good. Reference: TheWindowsClub ## API Development Tips DevFeed: [API Development Tips]() Original publisher: [Read original article]() Author: Federico Published: 2018-06-18T12:45:00Z Content type: tutorial Language: en Sources: [Federico Cargnelutti]() Topics: [programming-tips](), [API](), [versioning](), [API Logging](), [software-development](), [health check](), [Back end]() Tags: [api](), [api-development](), [apis](), [back-end](), [black](), [box](), [cables](), [cloud](), [development](), [failure](), [future](), [node-js](), [open-web](), [pitfalls](), [plan](), [releases](), [software-architecture](), [standards](), [test](), [tips](), [web](), [web-api](), [web-services]() ### AI overview The excerpt recommends designing open web APIs for failure across back-end systems, network interconnections, and external dependencies. It advises testing user-visible behavior with end-to-end black-box tests, replaying access logs, and validating response payloads; planning and announcing versions; and following standards to keep APIs predictable and avoid difficult migrations. It also recommends monitoring trends, communicating honestly, returning well-formed errors, making monitoring easy, and limiting the impact of failures by considering who is affected most. ### Source excerpt Organisations who are paying attention already know they need to have an open web API, and many already have under development or in the wild. Make sure you haven't been caught by the pitfalls of many early API releases. Multiple points of failure: The 5 tips Test it all Plan for future versions Embrace standards [...]