Skylight's newsletter covers its Ruby on Rails performance profiler, with product launches like the new MCP server and technical deep dives such as Rails 7 load_async instrumentation and migrating Ember apps to TypeScript. Readers get practical guidance on diagnosing slow endpoints and keeping their Rails or Ember codebases fast and well-typed.
Website: https://blog.skylight.io/
VarOps is an AI-focused newsletter built on real testing and hard-won practical lessons. Recent issues benchmark Mistral's Timestral forecasting models on a CPU, critically examine coding-agent benchmark claims, and introduce tools for checkpointing and explaining agent-driven code changes.
Weekly updates from the creator of Have I Been Pwned covering data breaches, cybercrime arrests, and his own development work on the service. Readers get a first-hand, opinionated view of the security landscape, including commentary on AI hype versus real-world breach evidence.
Jeff Atwood, co-founder of Stack Overflow and Discourse, writes personal essays on programming, online communities and the human side of technology. Recent issues cover Stack Overflow's legacy in the age of LLMs, a conference talk, and his new TWiT show.
Ryan Singer, author of Shape Up, shares practical guidance on defining software before hiring developers, separating framing (choosing work and getting buy-in) from shaping (specifying mechanics for building). Issues include a primer on documenting business logic and a real-world end-to-end Shape Up case study.
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