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Java Architect Essentials
Java Architect Essentials
Apr 8, 2026 · Backend Development

Switching Spring Boot 3 from Tomcat to Undertow: Step‑by‑Step Configuration and Performance Tuning

This guide explains why Tomcat may become a bottleneck under sudden high concurrency, introduces Undertow as a lightweight non‑blocking alternative, and provides detailed Maven, YAML/Properties, thread‑pool, timeout, request‑size, compression, HTTP/2, and access‑log configurations along with monitoring tips for Spring Boot 3 applications.

Backend DevelopmentConfigurationTomcat
0 likes · 6 min read
Switching Spring Boot 3 from Tomcat to Undertow: Step‑by‑Step Configuration and Performance Tuning
JavaGuide
JavaGuide
Oct 30, 2025 · Backend Development

Why Spring Boot 4.0 Dropped Support for Undertow

Spring Boot 4.0 removes Undertow because it cannot meet the Servlet 6.1 baseline, leading to build failures for projects that depend on spring-boot-starter-undertow, and the article analyzes the technical reasons, compatibility matrix, and lessons for future web‑container selection.

Spring Bootbackend-migrationjakarta-ee
0 likes · 10 min read
Why Spring Boot 4.0 Dropped Support for Undertow
macrozheng
macrozheng
Oct 28, 2025 · Backend Development

Why Spring Boot 4.0 Dropped Undertow Support and What It Means for Your Projects

Spring Boot 4.0’s release removes support for the Undertow web container due to incompatibility with the new Servlet 6.1 baseline, prompting developers to migrate to other containers; this article examines the technical reasons, Servlet 6.1 enhancements, Jakarta EE 11 standards, and compatibility across major servers.

backend-developmentjakarta-eeservlet-6.1
0 likes · 10 min read
Why Spring Boot 4.0 Dropped Undertow Support and What It Means for Your Projects
Selected Java Interview Questions
Selected Java Interview Questions
Oct 6, 2025 · Backend Development

Boost Spring Boot Performance: Switch from Tomcat to Undertow and Optimize Settings

This guide explains why Tomcat may become a bottleneck under high concurrency, shows how to replace it with the lightweight Undertow server in Spring Boot 3, and provides detailed configuration snippets for thread pools, timeouts, request size limits, compression, HTTP/2, access logging, and monitoring recommendations.

JavaSpring BootTomcat replacement
0 likes · 7 min read
Boost Spring Boot Performance: Switch from Tomcat to Undertow and Optimize Settings
IT Services Circle
IT Services Circle
Oct 5, 2025 · Backend Development

Why Big Companies Are Dropping Tomcat for Undertow in Spring Boot

Large enterprises are increasingly replacing Spring Boot’s default embedded Tomcat with Undertow because Undertow delivers superior memory efficiency, higher concurrency, lower latency, and more flexible configuration, as demonstrated by detailed performance benchmarks, architectural analysis, and real‑world migration case studies presented in this article.

Spring BootTomcatundertow
0 likes · 13 min read
Why Big Companies Are Dropping Tomcat for Undertow in Spring Boot
Code Ape Tech Column
Code Ape Tech Column
Jul 16, 2025 · Backend Development

7 Proven Spring Boot Performance Optimizations for Faster Apps

This article presents seven practical Spring Boot performance tuning techniques—including asynchronous execution, Tomcat connection tuning, component scanning, switching to Undertow, BufferedWriter usage, DeferredResult handling, and AsyncHandlerInterceptor interception—each illustrated with concise Java code examples to help developers boost application speed and scalability.

AsynchronousJavaPerformance Optimization
0 likes · 9 min read
7 Proven Spring Boot Performance Optimizations for Faster Apps
Java Architect Essentials
Java Architect Essentials
Jul 7, 2025 · Backend Development

6 Proven Spring Boot Performance Hacks to Slash Response Time

Discover six practical Spring Boot optimization techniques—including Tomcat thread‑pool tuning, @Async asynchronous processing, HTTP caching, switching to Undertow, HikariCP connection pooling, and JVM memory settings—that transformed a sluggish e‑commerce service from 5‑second delays to sub‑1.5‑second response times.

AsyncHTTP CachingHikariCP
0 likes · 11 min read
6 Proven Spring Boot Performance Hacks to Slash Response Time
Top Architect
Top Architect
Jun 4, 2025 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Configuration, Performance Comparison, and Recommendations

This article explains how to replace the default embedded Tomcat container in Spring Boot with Undertow, details the configuration steps and Maven dependencies, compares performance and memory usage between the two servers, and concludes with a recommendation for high‑concurrency applications, while also promoting related AI resources and services.

BackendJavaSpringBoot
0 likes · 10 min read
Replacing Tomcat with Undertow in Spring Boot: Configuration, Performance Comparison, and Recommendations
Top Architect
Top Architect
May 15, 2025 · Backend Development

Using Undertow as an Alternative to Tomcat in Spring Boot

This article explains how Spring Boot’s default embedded Tomcat container can be replaced with the high‑performance Undertow server, provides step‑by‑step Maven configuration, compares their performance and memory usage, and concludes with a recommendation for high‑concurrency applications while also containing promotional material for AI services.

JavaTomcatWeb server
0 likes · 10 min read
Using Undertow as an Alternative to Tomcat in Spring Boot
Architect's Tech Stack
Architect's Tech Stack
Mar 24, 2025 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Configuration and Performance Comparison

This article explains how to replace Spring Boot's default embedded Tomcat with the Undertow container, details the configuration steps, and presents benchmark results showing Undertow's superior throughput and lower memory usage under high‑concurrency workloads, making it a better choice for performance‑critical applications.

JavaSpring BootTomcat
0 likes · 6 min read
Replacing Tomcat with Undertow in Spring Boot: Configuration and Performance Comparison
Top Architect
Top Architect
Mar 9, 2025 · Backend Development

Using Undertow as an Alternative to Tomcat in SpringBoot: Features, Configuration, and Performance Comparison

This article explains how SpringBoot’s default embedded Tomcat can be replaced with the high‑performance Undertow server, shows the necessary Maven dependencies, lists Undertow’s key features, presents benchmark results comparing QPS and memory usage, and concludes with recommendations for high‑concurrency applications while also noting related AI‑product promotions.

JavaTomcatundertow
0 likes · 10 min read
Using Undertow as an Alternative to Tomcat in SpringBoot: Features, Configuration, and Performance Comparison
Top Architect
Top Architect
Feb 25, 2025 · Backend Development

Replacing Tomcat with Undertow in SpringBoot: Configuration, Features, and Performance Comparison

This article explains how SpringBoot's default Tomcat container can be swapped for the high‑performance Undertow server, details Undertow's characteristics, provides Maven configuration steps with code snippets, and presents benchmark results showing superior throughput and lower memory usage for high‑concurrency applications.

JavaTomcatundertow
0 likes · 8 min read
Replacing Tomcat with Undertow in SpringBoot: Configuration, Features, and Performance Comparison
Top Architect
Top Architect
Jan 18, 2025 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Configuration, Features, and Performance Comparison

This article explains how to replace Spring Boot's default embedded Tomcat container with Undertow, detailing Undertow's features, providing Maven dependency changes, and comparing performance and memory usage through test results, concluding that Undertow offers superior efficiency for high‑concurrency Java web applications.

JavaSpringBootTomcat
0 likes · 9 min read
Replacing Tomcat with Undertow in Spring Boot: Configuration, Features, and Performance Comparison
Top Architect
Top Architect
Dec 25, 2024 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Configuration, Features, and Performance Comparison

This article explains how Spring Boot uses Tomcat by default, introduces Undertow as a high‑performance alternative, provides step‑by‑step Maven configuration to switch containers, compares Tomcat and Undertow on throughput and memory usage, and recommends Undertow for high‑concurrency Java web applications.

JavaSpringBootTomcat
0 likes · 9 min read
Replacing Tomcat with Undertow in Spring Boot: Configuration, Features, and Performance Comparison
Top Architect
Top Architect
Dec 10, 2024 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Configuration, Features, and Performance Comparison

This article explains how to replace Spring Boot's default embedded Tomcat with the high‑performance Undertow server, provides step‑by‑step Maven dependency changes, outlines Undertow's advantages, and presents benchmark results showing superior throughput and lower memory usage for high‑concurrency applications.

JavaSpringBootTomcat
0 likes · 9 min read
Replacing Tomcat with Undertow in Spring Boot: Configuration, Features, and Performance Comparison
Java Tech Enthusiast
Java Tech Enthusiast
Sep 13, 2024 · Backend Development

Performance Tuning Guide for Undertow Web Server

This guide explains how to boost Undertow’s performance—outpacing Tomcat—by tuning I/O and worker thread counts, buffer sizes, timeouts, disabling unused features, using programmatic customizers, and enabling HTTP/2, with example application.yml settings for optimal speed and memory usage.

ConfigurationJavaWeb server
0 likes · 5 min read
Performance Tuning Guide for Undertow Web Server
Programmer DD
Programmer DD
Aug 29, 2024 · Backend Development

Tomcat vs Jetty vs Undertow: Which Spring Boot Embedded Server Performs Best?

This article builds a simple Spring Boot Greetings API, configures Maven profiles for Tomcat, Jetty, and Undertow, creates Docker images for each, runs load‑testing benchmarks across multiple concurrency levels, and analyzes startup time, CPU, memory, and response performance to determine the optimal embedded server.

BenchmarkDockerJetty
0 likes · 20 min read
Tomcat vs Jetty vs Undertow: Which Spring Boot Embedded Server Performs Best?
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jul 28, 2024 · Backend Development

Master Spring Boot Web Server Configuration: Switch Servers, Ports, SSL, and More

This guide explains how to switch the embedded web server in Spring Boot 3.2.5, disable it, customize ports (including random and range ports), enable HTTP compression, configure SSL and HTTP/2, add servlets, filters, listeners, set up logging, and fine‑tune Tomcat and Undertow settings, all with practical code examples.

ConfigurationHTTP/2Jetty
0 likes · 14 min read
Master Spring Boot Web Server Configuration: Switch Servers, Ports, SSL, and More
Top Architect
Top Architect
Jul 9, 2024 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Configuration, Performance Comparison, and Benefits

This article explains how to replace Spring Boot's default embedded Tomcat with the high‑performance Undertow server, detailing Undertow's features, providing Maven dependency changes, showing configuration steps, and presenting benchmark results that compare QPS and memory usage, concluding that Undertow is preferable for high‑concurrency Java backend applications.

JavaSpringBootTomcat
0 likes · 8 min read
Replacing Tomcat with Undertow in Spring Boot: Configuration, Performance Comparison, and Benefits
Code Ape Tech Column
Code Ape Tech Column
Jun 3, 2024 · Backend Development

Seven Common Spring Boot Performance Optimization Techniques

This article presents seven practical Spring Boot performance optimization methods—including asynchronous execution, increasing Tomcat connection limits, component scanning, switching to Undertow, buffered I/O, DeferredResult handling, and AsyncHandlerInterceptor usage—each illustrated with clear code examples and explanations.

DeferredResultSpring Bootthread pool
0 likes · 11 min read
Seven Common Spring Boot Performance Optimization Techniques
Architect
Architect
May 22, 2024 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Performance and Memory Benefits

This article explains how to replace the default embedded Tomcat container in Spring Boot with Undertow, outlines the configuration steps, compares their performance and memory usage through benchmark results, and concludes that Undertow offers superior throughput for high‑concurrency Java web applications.

BackendJavaTomcat
0 likes · 5 min read
Replacing Tomcat with Undertow in Spring Boot: Performance and Memory Benefits
Java Architect Essentials
Java Architect Essentials
Apr 6, 2024 · Backend Development

Comparing Tomcat and Undertow in SpringBoot: Configuration, Performance, and Memory Usage

This article explains how SpringBoot defaults to an embedded Tomcat container, shows how to replace it with Undertow by adding the appropriate dependency, and compares the two servers' performance and memory consumption through benchmark results, concluding that Undertow is preferable for high‑concurrency Java backend applications.

TomcatWeb Containerundertow
0 likes · 5 min read
Comparing Tomcat and Undertow in SpringBoot: Configuration, Performance, and Memory Usage
macrozheng
macrozheng
Feb 22, 2024 · Backend Development

How Many Requests Can a Default SpringBoot App Handle? Inside Tomcat & Undertow Thread Pools

This article walks through an interview question about the maximum concurrent requests a default SpringBoot application can process, builds a minimal demo, examines Tomcat and Undertow thread‑pool configurations, and shows how container defaults and parameters like core size, max size, and queue length determine the real limit.

JavaSpringBootThreadPool
0 likes · 19 min read
How Many Requests Can a Default SpringBoot App Handle? Inside Tomcat & Undertow Thread Pools
Sanyou's Java Diary
Sanyou's Java Diary
Nov 2, 2023 · Backend Development

How Many Requests Can a Default SpringBoot App Handle? Uncover Tomcat & Undertow Limits

This article explores how many concurrent requests a SpringBoot application can process with default settings, demonstrating a hands‑on demo, analyzing Tomcat’s thread‑pool defaults, comparing Undertow behavior, and revealing how configuration parameters like core threads, max threads, queue size, and connection limits affect throughput.

SpringBootThreadPoolTomcat
0 likes · 18 min read
How Many Requests Can a Default SpringBoot App Handle? Uncover Tomcat & Undertow Limits
macrozheng
macrozheng
Aug 25, 2023 · Backend Development

How Many Requests Can a Default SpringBoot App Handle? Uncover Tomcat & Undertow Thread Pool Secrets

This article explores the interview question of how many concurrent requests a SpringBoot project can process by building a minimal demo, measuring Tomcat and Undertow thread pool limits, analyzing default configurations, and showing how container settings and annotations like @Async affect the actual request capacity.

SpringBootThreadPoolTomcat
0 likes · 19 min read
How Many Requests Can a Default SpringBoot App Handle? Uncover Tomcat & Undertow Thread Pool Secrets
Java Backend Technology
Java Backend Technology
Jun 9, 2023 · Backend Development

Why Switch to Undertow? Boost SpringBoot Performance Over Tomcat

This article explains how to replace SpringBoot's default embedded Tomcat with the high‑performance Undertow container, compares their architectures, presents benchmark results on QPS and memory usage, and shows why Undertow is the better choice for high‑concurrency Java web applications.

JavaSpringBootTomcat
0 likes · 6 min read
Why Switch to Undertow? Boost SpringBoot Performance Over Tomcat
Java Architect Essentials
Java Architect Essentials
Dec 28, 2022 · Backend Development

Mastering Asynchronous Execution in Spring Boot: An In‑Depth Guide

This article provides a comprehensive guide to implementing asynchronous processing in Spring Boot, covering annotation‑based @Async, CompletableFuture patterns, WebAsyncTask, DeferredResult, custom thread pools, Tomcat tuning, component scanning, and switching to Undertow, with complete code examples and configuration details.

AsynchronousCompletableFutureDeferredResult
0 likes · 12 min read
Mastering Asynchronous Execution in Spring Boot: An In‑Depth Guide
Architect's Tech Stack
Architect's Tech Stack
Jul 6, 2022 · Backend Development

Replacing Tomcat with Undertow in Spring Boot: Performance and Memory Comparison

This article explains how to replace Spring Boot's default embedded Tomcat with Undertow, outlines the configuration steps, compares their performance and memory usage through benchmark results, and concludes that Undertow offers superior throughput and lower resource consumption for high‑concurrency Java web applications.

JavaSpringBootTomcat
0 likes · 5 min read
Replacing Tomcat with Undertow in Spring Boot: Performance and Memory Comparison
ITPUB
ITPUB
Jul 12, 2020 · Backend Development

Why Switch to Undertow in Spring Boot? Performance and Memory Gains Over Tomcat

This article explains how to replace Spring Boot's default embedded Tomcat with Undertow, compares their architectures, presents benchmark results showing Undertow's superior throughput and lower memory usage, and concludes that Undertow is the better choice for high‑concurrency Java web applications.

JavaSpring BootTomcat
0 likes · 6 min read
Why Switch to Undertow in Spring Boot? Performance and Memory Gains Over Tomcat
Java Backend Technology
Java Backend Technology
Feb 8, 2020 · Backend Development

Why Switch to Undertow? Boost SpringBoot Performance Over Tomcat

This article explains how to replace SpringBoot's default embedded Tomcat with Undertow, shows configuration steps, compares their performance and memory usage through benchmarks, and concludes that Undertow is the superior choice for high‑concurrency Java web applications.

JavaSpringBootTomcat
0 likes · 6 min read
Why Switch to Undertow? Boost SpringBoot Performance Over Tomcat