Kevin Tung·1d agoAll 20 Pool Connections Sat Idle in Transaction. Health Checks Succeeded Only 20–27% of the Time.A 2 s third-party call held inside a transaction pinned every pool slot. SELECT 1 health checks with a 200 ms deadline died while Postgres…
Mohiuddin Bilwal·Oct 20How a Rails App Handles Real Traffic: Puma, Threads, Connection Pools and SidekiqI’ve been working as a Ruby on Rails backend engineer for about a year and a half. For the first stretch, I treated things like…A response icon2A response icon2
Neeraj Prakash·Sep 27We used Cassandra as for lock management — And It took down our entire appBackground: We run multiple event based apps. Messages come in a queue, application processes these messages and publishes enriched…
Grazia D'Amico·Sep 24Why Can Scaling Kubernetes Pods Overload Your Database?Horizontal scaling is one of the most familiar ideas in Kubernetes.
Eylem Seyhan·Jul 28Connection Pool Nedir?Bir ASP.NET Core API geliştirirken uygulamamızın veritabanıyla konuşabilmesi için veritabanına bir bağlantı (connection) açması gerekir.
Shashwat Singh·Jun 11A Small Lesson I Learned About Connection PoolsWhile working on a Java application (JDBC) recently, I came across an interesting design question involving HikariCP connection pools.
InPython in Plain EnglishbyKaushikking·May 8The Handshake Massacre — Why Your FastAPI App Just Killed Your Postgres DatabaseThe Hacker News Kiss of Death
Varun Tewani·Apr 7Behind the Scenes: Thread Pools, Connection Pools, and HTTP Client Pools Every Backend Engineer…In the previous article, we pulled back the curtain on the Executor Framework — thread pools, rejection policies, pool sizing, graceful…
InLevel Up CodingbyBilgehan Aygün·Mar 31Http Connection Pool TTL Trap: Debugging Intermittent API FailuresA deep dive into the hidden trap of HTTP connection pool TTLs, Pod IP lifecycles, and graceful shutdowns in Kubernetes.
Things I Broke in Production·Mar 16The Week We Chased Ghosts: How a Hidden Connection Pool Starvation Froze Our Spring Boot ServiceA real-world debugging story about how a Spring Boot service randomly froze under load — and how we uncovered a hidden database connection…
