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observability
84 postsGo 1.25 Ships Flight Recorder for Runtime Trace Diagnostics
Go 1.25's flight recorder buffers recent execution trace data in memory, letting engineers snapshot production latency issues on demand.
DuckDB vs SQLite: 100x more rows on the same $16.49 server
On the same $16.49/month server, DuckDB writes 4x-15x faster than SQLite and serves dashboards at 100x the row count. Full Traceway benchmark results.
Why Raft Rebuilt Notifications to Work for AI Agents, Not Just Humans
Raft's engineering team redesigned notification architecture after discovering AI agents can't selectively ignore messages the way humans do.
CommitBrief — AI code reviews, right in your terminal
A provider-agnostic, local-first CLI that reviews your staged changes, a historic range, or a whole GitHub pull request. Zero telemetry, no server. Free and open source.
commitbrief.comAI Agent Cost Drift: Rolling Dashboards Miss 0.35%/Day Creep
Why do rolling-average dashboards miss a 0.35%/day AI agent cost increase? A math proof and 60-day test show the blind spot - and the fix.
Evaluation Debt: Why Offline Agent Evals Fail in Production
Why offline eval frameworks miss real production failures in AI agents, and why session-based observability is replacing static test suites.
LiteLLM's AI pricing table's only test is jq empty
LiteLLM's widely-reused AI pricing table is validated only by jq empty — no source checks, no dates, no history. Here's what engineers should know.
Fixing JavaScript Observability Without Monkey-Patching
Sentry engineers are pushing Node's TracingChannel API into pg, mysql2, and redis to replace fragile JavaScript APM monkey-patching.
When Green Tests Lie: Ten Patterns Behind False Positives
Ten real examples from a single audit day show how passing tests and checks can mask broken software, and how to actually test the checkers themselves.
Ctxdiff Brings Git-Style Diffing to LLM Agent Context Windows
Ctxdiff is a local-first, open-source tool that applies git-style diffing to LLM agent context windows, turn by turn.
Why Your SNS Messages Silently Disappear
SNS filter policies live on subscriptions, not in your code, so publishes can 'succeed' while messages never arrive. Here's why it happens and how to catch it early.