# .NET 9 Published articles for .NET 9. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Security updates for Thursday DevFeed: [Security updates for Thursday]() Original publisher: [Read original article]() Author: corbet Published: 2026-09-17T12:48:01Z Content type: news Language: en Sources: [LWN.net]() Topics: [Security]() Tags: [ansible](), [firefox](), [grafana](), [net-9](), [nginx](), [opentelemetry](), [python](), [security](), [updates]() ### AI overview A roundup of security updates issued by AlmaLinux, Debian, Fedora, Mageia, Red Hat, Slackware, SUSE, and Ubuntu. The updates cover packages and components including .NET, kernels, Firefox, nginx, Python packages, Grafana, OpenTelemetry Collector, Ansible, and valkey. ### Source excerpt Security updates have been issued by AlmaLinux (.NET 10.0, .NET 8.0, .NET 9.0, corosync, firewalld, kernel, kernel-rt, libevent, libsoup, microcode_ctl, nginx:1.26, python-lxml, rsyslog, tesseract, and unbound), Debian (firefox-esr, mkvtoolnix, thunderbird, and tor), Fedora (open62541, php-pecl-mongodb2, python-django6, python-jwcrypto, and roundcubemail), Mageia (aom, cockpit, libgd, packagekit, and python-h2), Red Hat (corosync, delve, git-lfs, grafana-pcp, gstreamer1-plugins-base, libvirt, opentelemetry-collector, and rhc-worker-playbook), Slackware (mozilla-firefox and mozilla-thunderbird), SUSE (acl, attr, alloy, ansible-core, clamav, containerized-data-importer, corosync, cups, distribution, glibc, google-cloud-sap-agent, govulncheck-vulndb, gvfs, helm, jq, kbd, kubernetes1.34-apiserver, kubernetes1.35-apiserver, lcms2, libcupsfilters, liblzmasdk26, libzypp, zypper, mistral-vibe, opensc, openvpn, pcre2, python-jwcrypto, tomcat, tomcat10, and tomcat11), and Ubuntu (guix, libheif, perl, python-cryptography, sqlite3, and valkey). ## Microsoft Releases .NET 11 RC1 with Go-Live Support, C# 15 and F# 11 as Default Language Versions DevFeed: [Microsoft Releases .NET 11 RC1 with Go-Live Support, C# 15 and F# 11 as Default Language Versions]() Original publisher: [Read original article]() Author: Almir Vuk Published: 2026-09-15T07:11:00Z Content type: news Language: en Sources: [InfoQ]() Topics: [.NET 11](), [C# 15](), [Microsoft](), [releases](), [ASP.NET Core](), [F#](), [SignalR](), [SDKs](), [.NET MAUI](), [native aot]() Tags: [android](), [api](), [asp-net-core](), [c-sharp-15](), [development](), [dotnet-11-rc-1-release](), [f-sharp](), [ios](), [macos](), [microsoft](), [native-aot](), [net](), [net-10](), [net-11](), [net-9](), [net-core](), [net-maui](), [news](), [releases](), [sdk](), [signalr]() ### AI overview Microsoft released .NET 11 Release Candidate 1 with go-live support for production use. It makes C# 15 and F# 11 the default language versions and stabilizes features from the preview cycle. The release also extends testing across mobile and desktop targets, updates SignalR authentication refresh APIs, and adds SDK, ASP.NET Core, Blazor, and Native AOT-related improvements. ### Source excerpt Last week, Microsoft has released .NET 11 Release Candidate 1, the first release candidate of the cycle, shipping with a go-live support license for production use. The release makes C# 15 and F# 11 the default language versions, extends dotnet test to mobile and desktop targets, finalizes the SignalR authentication refresh APIs, and improves Android build times in .NET MAUI. By Almir Vuk ## How to Orchestrate Multi-Call Conversations with an LLM and Twilio Conversation Memory DevFeed: [How to Orchestrate Multi-Call Conversations with an LLM and Twilio Conversation Memory]() Original publisher: [Read original article]() Author: Amanda Lange Published: 2026-09-15T00:00:00Z Content type: tutorial Language: en Sources: [Twilio Blog]() Topics: [Large Language Model](), [.NET](), [ASP.NET](), [C#](), [Artificial Intelligence](), [Command-line interface](), [OpenAI](), [Environment Variables]() Tags: [account](), [agent](), [ai](), [api](), [c-sharp](), [cli](), [code](), [conversation-memory](), [developer-insights](), [environment-variables](), [how-to](), [llm](), [net](), [net-9](), [openai]() ### AI overview This tutorial shows how to build a C# .NET 9 ASP.NET Core service that preserves caller context, preferences, and action history across separate inbound calls using Twilio Conversation Memory and an LLM. ### Source excerpt How to Orchestrate Multi-Call Conversations with an LLM and Twilio Conversation Memory ## How to Connect Your Twilio Agent to External APIs DevFeed: [How to Connect Your Twilio Agent to External APIs]() Original publisher: [Read original article]() Author: Amanda Lange Published: 2026-09-15T00:00:00Z Content type: tutorial Language: en Sources: [Twilio Blog]() Topics: [AI Agent](), [API](), [C#](), [.NET 9](), [REST API](), [SDKs](), [OpenAI]() Tags: [agent](), [api](), [apis](), [c-sharp](), [developer-insights](), [environment-variables](), [how-to](), [net](), [net-9](), [ngrok](), [openai](), [rest-api](), [sdk]() ### AI overview This tutorial explains how to build a voice AI agent with C# and .NET 9 using Twilio Conversation Relay. It demonstrates LLM tool calling to fetch live data from an external REST API and covers project setup, required packages, environment variables, and API key storage. ### Source excerpt How to Connect Your Twilio Agent to External APIs ## Lessons Learned from Fixing Flaky Tests with Claude DevFeed: [Lessons Learned from Fixing Flaky Tests with Claude]() Original publisher: [Read original article]() Author: Henrik Warne Published: 2026-08-15T15:50:33Z Content type: article Language: en Sources: [Henrik Warne]() Topics: [Claude](), [Testing]() Tags: [claude](), [flaky-tests](), [integration](), [learning](), [llm](), [net-9](), [parallel](), [programming](), [running](), [testing](), [tests]() ### AI overview The article describes lessons learned from using Claude to diagnose and fix flaky integration tests after parallelizing a test suite. It explains that blindly accepting plausible fixes was ineffective, while understanding and reviewing each change was important. ### Source excerpt We recently sped up our integration tests by a factor of ten by running many of them in parallel. There were several flaky tests in the new test suite. Claude was really useful in getting rid of almost all flakyness, ... Continue reading -> ## Securing MySQL Databases with SSL/TLS. DevFeed: [Securing MySQL Databases with SSL/TLS.]() Original publisher: [Read original article]() Author: ben@goteleport.com (Ben Arent) Published: 2022-07-25T00:00:00Z Content type: tutorial Language: en Sources: [Teleport]() Topics: [MySQL](), [SSL](), [TLS (Transport Layer Security)](), [Encryption](), [Ubuntu]() Tags: [apt](), [authentication](), [certificates](), [databases](), [encryption](), [guide](), [install](), [mysql](), [net-9](), [ssl](), [tls](), [tutorial](), [ubuntu](), [verify]() ### AI overview A tutorial on securing MySQL 8 connections with SSL/TLS on Ubuntu 22.04. It covers installing MySQL, configuring security best practices, creating users with appropriate privileges, and setting up certificates for encrypted database traffic. ### Source excerpt How to secure a MySQL Database with SSL/TLS for MySQL 8 and Ubuntu 22.04.