# TOP

Published articles for TOP.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## Sites using PQC (September 2026)

DevFeed: [Sites using PQC (September 2026)](<https://devfeed.tech/articles/sites-using-pqc-september-2026-30242.md>)

Original publisher: [Read original article](<https://www.netmeister.org/blog/pqc-use-2026-09.html>)

Published: 2026-09-01T14:49:46Z

Content type: article

Language: en

Sources: [Signs of Triviality](<https://devfeed.tech/sources/signs-of-triviality.md>)

Topics: [Post-quantum cryptography](<https://devfeed.tech/topics/post-quantum-cryptography.md>), [Post-Quantum](<https://devfeed.tech/topics/post-quantum.md>), [TLS (Transport Layer Security)](<https://devfeed.tech/topics/tls.md>), [Cryptography](<https://devfeed.tech/topics/cryptography.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [cryptography](<https://devfeed.tech/tags/cryptography.md>), [post](<https://devfeed.tech/tags/post.md>), [post-quantum](<https://devfeed.tech/tags/post-quantum.md>), [post-quantum-cryptography](<https://devfeed.tech/tags/post-quantum-cryptography.md>), [quantum](<https://devfeed.tech/tags/quantum.md>), [september-2026](<https://devfeed.tech/tags/september-2026.md>), [sites](<https://devfeed.tech/tags/sites.md>), [tls](<https://devfeed.tech/tags/tls.md>), [top](<https://devfeed.tech/tags/top.md>), [using](<https://devfeed.tech/tags/using.md>)

### AI overview

A periodic check examines which of the top 1 million domains support post-quantum cryptography in their TLS key exchange.

### Source excerpt

One more periodic check of which of the top 1M domains support post-quantum cryptography in their TLS key exchange.

## An Efficient Way to Check for Existence of Multiple Values in SQL

DevFeed: [An Efficient Way to Check for Existence of Multiple Values in SQL](<https://devfeed.tech/articles/an-efficient-way-to-check-for-existence-of-multiple-values-in-sql-28931.md>)

Original publisher: [Read original article](<https://blog.jooq.org/an-efficient-way-to-check-for-existence-of-multiple-values-in-sql/>)

Author: lukaseder

Published: 2024-02-16T14:16:45Z

Content type: tutorial

Language: en

Sources: [jOOQ](<https://devfeed.tech/sources/jooq.md>)

Topics: [SQL](<https://devfeed.tech/topics/sql.md>), [Benchmark](<https://devfeed.tech/topics/benchmark.md>), [Oracle Database](<https://devfeed.tech/topics/oracle-database.md>), [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>)

Tags: [benchmark](<https://devfeed.tech/tags/benchmark.md>), [benchmarking](<https://devfeed.tech/tags/benchmarking.md>), [compare](<https://devfeed.tech/tags/compare.md>), [count](<https://devfeed.tech/tags/count.md>), [database](<https://devfeed.tech/tags/database.md>), [derived-table](<https://devfeed.tech/tags/derived-table.md>), [execution](<https://devfeed.tech/tags/execution.md>), [exists](<https://devfeed.tech/tags/exists.md>), [join](<https://devfeed.tech/tags/join.md>), [limit](<https://devfeed.tech/tags/limit.md>), [mysql](<https://devfeed.tech/tags/mysql.md>), [oracle](<https://devfeed.tech/tags/oracle.md>), [oracle-23c](<https://devfeed.tech/tags/oracle-23c.md>), [performance](<https://devfeed.tech/tags/performance.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [rdbms](<https://devfeed.tech/tags/rdbms.md>), [sql](<https://devfeed.tech/tags/sql.md>), [sql-performance](<https://devfeed.tech/tags/sql-performance.md>), [sql-server](<https://devfeed.tech/tags/sql-server.md>), [sql-syntax](<https://devfeed.tech/tags/sql-syntax.md>), [top](<https://devfeed.tech/tags/top.md>)

### AI overview

This article explains how to check whether multiple matching rows exist in SQL. It recommends limiting rows in a derived table before counting them, then compares execution plans and benchmark results for PostgreSQL 15 and Oracle 23c.

### Source excerpt

In a previous blog post, we've advertised the use of SQL EXISTS rather than COUNT(*) to check for existence of a value in SQL. I.e. to check if in the Sakila database, actors called WAHLBERG have played in any films, instead of: Do this: (Depending on your dialect you may require a FROM DUAL clause, ... Continue reading An Efficient Way to Check for Existence of Multiple Values in SQL ->

## Estimating the Security of Ring Learning with Errors (RLWE)

DevFeed: [Estimating the Security of Ring Learning with Errors (RLWE)](<https://devfeed.tech/articles/estimating-the-security-of-ring-learning-with-errors-rlwe-40461.md>)

Original publisher: [Read original article](<https://www.jeremykun.com/2022/12/28/estimating-the-security-of-ring-learning-with-errors-rlwe/>)

Published: 2022-12-28T14:52:01Z

Content type: tutorial

Language: en

Sources: [Jeremy Kun](<https://devfeed.tech/sources/jeremy-kun.md>)

Topics: [Cryptography](<https://devfeed.tech/topics/cryptography.md>), [Security](<https://devfeed.tech/topics/security.md>), [Estimator](<https://devfeed.tech/topics/estimator.md>), [FHE](<https://devfeed.tech/topics/fhe.md>)

Tags: [cod](<https://devfeed.tech/tags/cod.md>), [cryptography](<https://devfeed.tech/tags/cryptography.md>), [estimator](<https://devfeed.tech/tags/estimator.md>), [lattice-cryptography](<https://devfeed.tech/tags/lattice-cryptography.md>), [learning-with-errors](<https://devfeed.tech/tags/learning-with-errors.md>), [lwe](<https://devfeed.tech/tags/lwe.md>), [mathematics](<https://devfeed.tech/tags/mathematics.md>), [programming](<https://devfeed.tech/tags/programming.md>), [ring-learning-with-errors](<https://devfeed.tech/tags/ring-learning-with-errors.md>), [rlwe](<https://devfeed.tech/tags/rlwe.md>), [sage](<https://devfeed.tech/tags/sage.md>), [security](<https://devfeed.tech/tags/security.md>), [test](<https://devfeed.tech/tags/test.md>), [top](<https://devfeed.tech/tags/top.md>)

### AI overview

The article explains how to estimate the security of lattice-based schemes based on Learning With Errors (LWE) and Ring Learning With Errors (RLWE). It introduces LWE parameters and describes how the Lattice Estimator estimates the costs of known lattice attacks for a given instance.

### Source excerpt

This article was written by my colleague, Cathie Yun. Cathie is an applied cryptographer and security engineer, currently working with me to make fully homomorphic encryption a reality at Google. She's also done a lot of cool stuff with zero knowledge proofs. In previous articles, we've discussed techniques used in Fully Homomorphic Encryption (FHE) schemes. The basis for many FHE schemes, as well as other privacy-preserving protocols, is the Learning With Errors (LWE) problem.

## Building radio stations at SoundCloud

DevFeed: [Building radio stations at SoundCloud](<https://devfeed.tech/articles/building-radio-stations-at-soundcloud-2008.md>)

Original publisher: [Read original article](<https://developers.soundcloud.com/blog//building_radio_stations_at_soundcloud>)

Published: 2016-07-05T00:00:00Z

Content type: opinion

Language: en

Sources: [SoundCloud Backstage Blog](<https://devfeed.tech/sources/soundcloud-backstage-blog.md>)

Topics: [consistency](<https://devfeed.tech/topics/consistency.md>), [context](<https://devfeed.tech/topics/context.md>), [Web](<https://devfeed.tech/topics/web.md>), [Mobile](<https://devfeed.tech/topics/mobile.md>)

Tags: [announcements](<https://devfeed.tech/tags/announcements.md>), [building](<https://devfeed.tech/tags/building.md>), [consistency](<https://devfeed.tech/tags/consistency.md>), [context](<https://devfeed.tech/tags/context.md>), [cost](<https://devfeed.tech/tags/cost.md>), [desktop](<https://devfeed.tech/tags/desktop.md>), [discovery](<https://devfeed.tech/tags/discovery.md>), [feature](<https://devfeed.tech/tags/feature.md>), [future](<https://devfeed.tech/tags/future.md>), [life](<https://devfeed.tech/tags/life.md>), [machine-learning](<https://devfeed.tech/tags/machine-learning.md>), [mobile](<https://devfeed.tech/tags/mobile.md>), [music](<https://devfeed.tech/tags/music.md>), [office](<https://devfeed.tech/tags/office.md>), [production](<https://devfeed.tech/tags/production.md>), [recommendation-system](<https://devfeed.tech/tags/recommendation-system.md>), [top](<https://devfeed.tech/tags/top.md>), [web](<https://devfeed.tech/tags/web.md>)

### AI overview

SoundCloud describes the design principles behind its radio-like Artist Stations discovery feature. The article emphasizes balancing novelty and familiarity while maintaining consistency and context so listeners can enjoy a lean-back music experience across mobile and web.

### Source excerpt

Over the last 100 years we have dialed into radio stations at home, on the road, or in the office to access a curated mix of top hits delivered to us by our favorite DJ. With more and more of our daily activities taking place online, we find our source of music now comes from a mix of our mobile phones, our desktop computers and the radio - and is available to us whenever we need it. The amount of music available today is endless. The music scene has never been so vibrant. A proliferation of production tools at low cost and the ease at which an artist can share their sounds, gives everyone the opportunity to share their work at any time, with only a few clicks. Keeping this in mind, we set out to determine: How can we bring a radio like experience to SoundCloud that would enable you to tune-in and lean back?

## Sprawdzenie który proces obciąża dyski

DevFeed: [Sprawdzenie który proces obciąża dyski](<https://devfeed.tech/articles/sprawdzenie-ktory-proces-obciaza-dyski-27498.md>)

Original publisher: [Read original article](<https://gagor.pro/2011/09/sprawdzenie-ktory-proces-obciaza-dyski/>)

Author: Tom

Published: 2011-09-02T00:00:00Z

Content type: tutorial

Language: pl

Sources: [Tomasz Gągor](<https://devfeed.tech/sources/tomasz-gagor.md>)

Topics: [IO](<https://devfeed.tech/topics/io.md>), [cpu](<https://devfeed.tech/topics/cpu.md>)

Tags: [centos](<https://devfeed.tech/tags/centos.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [debian](<https://devfeed.tech/tags/debian.md>), [io](<https://devfeed.tech/tags/io.md>), [linux](<https://devfeed.tech/tags/linux.md>), [load](<https://devfeed.tech/tags/load.md>), [program](<https://devfeed.tech/tags/program.md>), [top](<https://devfeed.tech/tags/top.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>)

### AI overview

A server's load had been increasing because CPU cores were spending 80-90% of their time waiting for disk data, although no process significantly used the CPU. The article recommends iotop to identify processes generating disk load and notes that it is available in Debian's standard repositories.

### Source excerpt

Na jednym z serwerów zauważyłem dziwny wzrost obciążenia. Tzw. LOAD od kilku dni po woli rósł. top pokazywał że dwa rdzenie CPU czekają na dane z dysku - tzw. io wait na poziomie 80~90% ale żaden proces w znaczącym stopniu nie obciążał CPU. Jest kilka narzędzi (iostat, wmstat), które pozwalają monitorować obciążenie dysków ale ja nie szukałem informacji czy i w jakim stopniu dyski są obciążone - wiedziałem że są. Chciałem dowiedzieć się który proces generuje to obciążenie - by móc go ubić 😃