All posts / tag
#kubernetes
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Rolling PgBouncer without dropped queries
On taking the connection-bad spike during PgBouncer rollouts to zero. Pooling modes, the three connection layers a rollout has to cross, the SIGTERM-vs-SIGINT dilemma, and where the actual fix lives.
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When config edits start feeling like deploys
How to add dynamic configuration to hot, frequently-read request-path code in a Rails-on-Kubernetes app, without restarting any worker. Propagating config edits across the fleet via ConfigMap as an event channel: the alternatives I considered, the shape I shipped, and why most of the design was about what I kept out of the channel.