Can
How do I set a clear rule for when to log at WARN versus ERROR?
Log at ERROR when the line would wake someone at 3am and at WARN when it would not, log a failure once at its boundary, and alert on the ERROR rate.
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Answered questions
Elif
Should I define the healthcheck in the Dockerfile or leave it to Kubernetes probes?
Define readiness, liveness and startup as Kubernetes probes; keep HEALTHCHECK only if the image also runs under Compose, pointing both at one endpoint.
Burak
How should I run the sunset process when deprecating an endpoint in my public API?
Instrument usage per partner, publish a dated sunset with Sunset and Deprecation headers on every response, run brownouts, and cut when usage nears zero.
Zeynep
Why does a query use an Index Scan in staging but a Seq Scan in production, and how do I diagnose it with EXPLAIN?
Run EXPLAIN (ANALYZE, BUFFERS) in production, then ANALYZE the table and check n_dead_tup; tune autovacuum per-table for sessions and add a partial index.
Kerem
How do I detect and prevent goroutine leaks in a long-running Go service?
Export NumGoroutine() as a metric, take a pprof goroutine dump at peak, make the spawn site behind the parked stacks honor ctx.Done(), then add goleak.
Ayşe
Should I enable Model::preventLazyLoading only locally or in production too?
Run it fully strict and throwing in local and CI; in production keep it on but wire handleLazyLoadingViolationUsing to log without failing the request.
Mert
What do I gain and lose by moving my status class constants to backed enums?
Add a backed enum on the same integer values, use tryFrom() at the boundaries, and keep the old constants as deprecated aliases while you move call sites.
Emir
How do I design a self-healing deploy that auto-rolls back when the error rate spikes?
Hold the new version at a canary weight and check 5xx and latency against a threshold; on breach, roll back to the last stable release and alert the team.
Gazi
Should I put my API server behind a Cloudflare Tunnel and close port 443 to the internet?
The tunnel is sound but makes Cloudflare your only way in; stay on the current Caddy setup, lock the origin to Cloudflare's IP ranges and add origin pulls.
Bora
Canary or Blue-Green deployment for a fintech API?
Make Canary the default for routine releases and save Blue-Green for big cutovers needing an instant flip, since both demand expand/contract migrations.