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Find the 10 highlighted links of weeklyfoo #158:
Ephemeral testing
by Daniel Lemire
Test a software component by having an agent build disposable applications on top of it, exposing hidden state, unstable invariants, surprising defaults and weak documentation
📰 Good to know, ai, testing
Capturing and replaying real database workloads at Airbnb
by Airbnb
Airbnb captures MySQL traffic at ProxySQL, rebuilds transaction order offline and replays production workloads for load testing, migration checks and the move from MySQL 5.7 to 8.0
📰 Good to know, databases, mysql, testing
The agent said it was done. The database disagreed
by Microsoft
ThinkingBox evaluates agents by the backend state they leave behind across 507 workflows, where 67% of 79,853 failed runs ended without a tool error
📰 Good to know, ai, agents, evals
A terminal protocol for program status (OSC 7501)
by Mitchell Hashimoto
Spec for an escape sequence that lets any program tell the terminal whether it is idling, working, waiting on the user, finished or failed, and why
📰 Good to know, terminal, tools
A hitchhiker's guide to Postgres text search
by Cortex
Cortex replaced a Lucene-based search architecture with Postgres full-text search, a custom query parser, weighted ranking and CDC-fed indexes, cutting public API p95 latency from 13.3 to 1.54 seconds
📰 Good to know, postgres, search, databases
A single POST freezes any Next.js server
by Simon Koeck
React Server Components flaw where a roughly 900 KB request forces quadratic FormData work and blocks the Node.js event loop, fixed in React 19.0.6, 19.1.7 and 19.2.6
📰 Good to know, security, react, nextjs
pgx-bm25 1.0
by PGX Inc.
Pure C BM25 ranked full-text search extension whose indexes live in the index relation's pages, so WAL logging, replication and VACUUM work as usual
🧰 Tools, postgres, search, opensource
e2e
by Tester Army
Agent-driven end-to-end testing for web and mobile apps that records successful agent steps and replays them without model calls until the app changes
🧰 Tools, ai, testing, playwright
TanStack Intent
by TanStack
CLI to generate, validate and ship agent skills alongside your library, versioned with the package and discovered by agents from node_modules
🧰 Tools, ai, agents, tooling
Responsibly dimming the lights in the software factory
by Victor Rentea
Steps and milestones for raising the quality of AI-generated code until code review intensity can safely go down, without cognitive debt and skill erosion
📺 Videos, ai, agents, codereview
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