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Developer tools · #tomcat
Stop crashing your JVM with too many threads. Learn how to tune Tomcat's NIO connector by balancing maxConnections and maxThreads for high-concurrency traffic.
Requests hang while CPU idles? That's Tomcat's Connector thread pool exhausted, usually by threads blocked downstream. A diagnostic path from thread dumps to the right fix.
When Tomcat reports “Failed to accept HTTP/2 connection: ALPN not available” or clients cannot upgrade, this guide walks through common causes, checks, and fixes to get HTTP/2 working on Tomcat 9+.
Learn how to configure a shared Tomcat thread pool to cut memory waste and simplify tuning across HTTP and AJP connectors.
A decision guide for picking a JDBC connection pool in Tomcat: comparing the built-in Tomcat JDBC Pool, HikariCP, and DBCP2 with concrete JNDI configurations and validation steps.
Tomcat behind a load balancer logs the proxy's IP, not the visitor's. RemoteIpValve restores the real client address from X-Forwarded-For and the scheme from X-Forwarded-Proto — if you configure the trust regex and valve ordering correctly.
A decision guide for selecting Tomcat connector protocols (HTTP/1.1, HTTP/2, AJP) based on deployment topology, performance needs, and reverse-proxy architecture. Covers Tomcat 9.0.x and 10.1.x LTS with concrete configurations and validation steps.
Learn how to free Tomcat worker threads by using Servlet 3.0 asynchronous request processing with a CompletableFuture‑based example and verification steps.
Learn how to prevent connection leaks and thread saturation in Tomcat by tuning the JDBC pool and Executor settings for high-concurrency environments.
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