performance

• 2026-07-05
  Four Bugs That Needed Real Postgres to Exist

  A code review found zero bugs. The benchmark found four. Each one required concurrent load against real Postgres to exist.

  The Memory Benchmark · 28/41 6 min read
• 2026-07-05
  Six OOMs and a Connection Pool

  A Spring Boot imperative app OOM'd six different ways at 256MB. Each HTTP client swap revealed what was actually eating the heap.

  The Memory Benchmark · 27/41 6 min read
• 2026-07-04
  1% CPU and 6-Second Latency

  A Quarkus reactive app hit 18.8 req/s while CPU idled at 1%. Two stacked bottlenecks — a transaction annotation and a connection pool default — explained the 5x gap with Spring.

  The Memory Benchmark · 24/41 6 min read