---
title: "Apache Tomcat"
description: "1 posts about Apache Tomcat, summarised, each linking to the original."
---

# Apache Tomcat
> 1 posts about Apache Tomcat, summarised, each linking to the original.

## Articles

### [Upgrading to Red Hat JBoss Web Server 7: Key changes & impacts](https://yomu.fyi/post/upgrading-to-red-hat-jboss-web-server-7-key-changes-impacts.md)
- Company: [Red Hat](https://yomu.fyi/company/red-hat.md)
- Author: Jeff Beck
- Published: Sep 28, 2026
- Type: Explainer

Red Hat JBoss Web Server 7, based on Apache Tomcat 11 and Jakarta EE 11, requires Java 17 as the new minimum and drops support for Java 11. Jakarta EE 11 does not require another import rename but adds a RecordELResolver for records and an OptionalELResolver for optionals. Tomcat 11 changes parameter parsing to throw exceptions on malformed requests, reduces maxParameterCount to 1,000 from 10,000, removes FailedRequestFilter and HTTP/2 push, and retains quotes in cookie values per RFC 6265. The Java SecurityManager is removed, UBI 8 images are discontinued for UBI 9, Prometheus is no longer bundled, and Red Hat recommends container isolation as replacement. Teams must confirm Java 17 readiness, check for SecurityManager usage, update their base image pipeline, and note that Spring Boot 4 on JWS 7 is unsupported.