B3 Engineering BlogPrecision engineering, one bit at a time. Notes from the teams building B3.https://blog.bbyb.dev/How we rebuilt our data plane to serve 40M requests per second without losing sleep.https://blog.bbyb.dev/data-plane-rebuild/https://blog.bbyb.dev/data-plane-rebuild/A year of removing abstractions, re-thinking what belongs on the hot path, and learning to trust a very small amount of code.Sat, 18 Apr 2026 00:00:00 GMTPriya Raman & Marco SilvaA year of running Postgres on NVMe: what we learned the hard way.https://blog.bbyb.dev/postgres-nvme/https://blog.bbyb.dev/postgres-nvme/We moved our primary OLTP cluster to direct-attached NVMe. The gains were obvious, the foot-guns less so. A long-form retrospective with benchmarks.Wed, 15 Apr 2026 00:00:00 GMTElena CastellanosBazel at B3: how we cut CI wall-clock time by 68%.https://blog.bbyb.dev/bazel-ci/https://blog.bbyb.dev/bazel-ci/A practical tour through our migration — remote cache strategy, query-level parallelism, the boring parts that actually mattered.Thu, 09 Apr 2026 00:00:00 GMTMarco SilvaThe incident that taught us to distrust our own dashboards.https://blog.bbyb.dev/dashboard-incident/https://blog.bbyb.dev/dashboard-incident/Our graphs said everything was green. Users disagreed. A walk through a three-hour degradation and the monitoring gaps we closed.Thu, 02 Apr 2026 00:00:00 GMTPriya RamanWriting a query planner in Rust: ownership as a design tool.https://blog.bbyb.dev/rust-query-planner/https://blog.bbyb.dev/rust-query-planner/How the borrow checker nudged us toward a cleaner IR than we would have drawn on a whiteboard.Fri, 27 Mar 2026 00:00:00 GMTYusuf AydınChasing a 4-microsecond tail: profiling our hottest RPC.https://blog.bbyb.dev/microsecond-tail/https://blog.bbyb.dev/microsecond-tail/Flame graphs, eBPF, and a lot of humility. A case study in peeling off latency one nanosecond at a time.Wed, 18 Mar 2026 00:00:00 GMTDana WintersServing embeddings at scale without a dedicated inference team.https://blog.bbyb.dev/embeddings-at-scale/https://blog.bbyb.dev/embeddings-at-scale/We treat vector search as plumbing, not magic. Here's the architecture, the cost model, and the trade-offs.Wed, 11 Mar 2026 00:00:00 GMTJin ParkMutual TLS everywhere, and the operational work it actually takes.https://blog.bbyb.dev/mutual-tls/https://blog.bbyb.dev/mutual-tls/Zero-trust sounds great on a slide. In practice it's a supply chain of certificate rotations, SPIFFE IDs, and on-call pages.Wed, 04 Mar 2026 00:00:00 GMTAmira Ben-SassiWhy we stopped caring about exactly-once and slept better.https://blog.bbyb.dev/exactly-once/https://blog.bbyb.dev/exactly-once/A story about idempotency keys, message de-duplication, and choosing boring correctness over clever guarantees.Tue, 24 Feb 2026 00:00:00 GMTHarper WuThe small internal tool that saved ten engineer-years.https://blog.bbyb.dev/internal-tool/https://blog.bbyb.dev/internal-tool/A 400-line Go binary replaced a cross-team process nobody loved. A quiet lesson in shipping the tool your coworkers actually need.Tue, 17 Feb 2026 00:00:00 GMTRafael Koenig