This guide introduces Meteor-Console, a customized, non‑intrusive Java diagnostic tool built on Arthas, explains its architecture, provides step‑by‑step installation commands, lists key features such as JVM class query and method monitoring, and shares the open‑source repository link.
This article examines whether Java's try…catch blocks affect performance by exploring their historical origins, JVM exception mechanisms, detailed micro‑benchmarks, and modern JVM optimizations, ultimately revealing that only exception creation and throwing incur noticeable costs while normal execution remains virtually unaffected.
This article compiles detailed Java backend interview questions and answers, covering MySQL lock types, thread lifecycle states, garbage collection mechanisms, volatile semantics, RabbitMQ reliability, delayed queues, Zset usage, and practical coding examples.
This article introduces Jpom, a lightweight Java‑based tool that streamlines project building, automated deployment, server management, and monitoring, offering an easier alternative to Jenkins for individuals and small teams, with detailed feature lists, architecture overview, and step‑by‑step installation instructions.
The article reviews the most common MyBatis‑Plus traps encountered in large‑scale Java services—duplicate Snowflake IDs, batch‑insert reordering, enum storage mismatches, camel‑case mapping errors, auto‑fill loss, and JSON field disappearance—explaining each root cause, illustrating it with real code snippets, and providing concrete solutions to keep production systems stable.
This article introduces Maven‑mvnd, a daemon‑based Maven wrapper that dramatically reduces build time and resource usage for Java projects, explains its key features, provides step‑by‑step installation and configuration instructions, and compares its packaging performance against standard Maven.
A popular claim that changing a Java field name from "userName" to "usrNme" can cut API latency by dozens of milliseconds is examined, revealing why hashCode calculations, reflection, and caching have negligible impact compared to real bottlenecks like I/O, GC, and thread scheduling.
This guide shows how to improve Spring Boot configuration management by using Java enums together with @ConfigurationProperties, providing clear, type‑safe settings, reducing magic numbers, and demonstrating a complete example with Maven dependencies, YAML files, a configuration class, controller, and Thymeleaf view.
DynamicTp is an open‑source SpringBoot starter that lets developers monitor, alert on, and adjust ThreadPoolExecutor parameters at runtime via popular configuration centers, offering zero‑intrusion integration, extensible metrics, multi‑channel notifications, and support for a wide range of middleware thread pools.
The article starts by highlighting Xiaomi's competitive software developer salaries, then provides a detailed Java interview guide covering reflection fundamentals, static vs dynamic proxies, SPI vs API, synchronization behavior, Redis caching strategies, and JWT authentication, complete with code examples and practical comparisons.
Spring Boot 4.0 launches alongside Spring Framework 7, Spring Data 2025.1 and Spring AI 1.1, delivering a sweeping upgrade that moves the stack to Jakarta EE 11, JDK 25, JSpecify null‑safety, build‑time optimizations, native OpenTelemetry support, and a dual‑track AI strategy.
A third‑year student recounts four distinct campus interviews—from a state‑owned big‑data firm to an AI startup—detailing test formats, technical questions, and personal growth, and concludes that most graduates ultimately join the countless small‑mid‑size companies that keep society running.
This guide introduces the Logbook library for Spring Boot 3, explains how to add the starter dependency, configure default logging, customize request filtering, log formatting, sink implementation, and client‑side interception, and provides complete code examples and configuration snippets.
This article measures the exact time cost of establishing a MySQL connection from Java, breaks down the TCP handshake, authentication, and protocol steps with Wireshark captures, and shows why connection pooling is essential for high‑traffic web applications.
This step‑by‑step guide explains why you might need a custom Jenkins plugin, walks you through setting up Java 21 and Maven, generating a plugin project with the Jenkins archetype, building and locally testing it, and finally publishing it to the Jenkins Marketplace with best‑practice tips for security, CI, versioning, and community engagement.
MyPerf4J is an open‑source, high‑performance Java monitoring and statistics tool that uses a JavaAgent for zero‑intrusion, records up to ten million method calls per second with nanosecond precision, and provides real‑time metrics such as QPS, latency percentiles, memory and GC stats, making it ideal for both development and production environments.
This article presents nine practical techniques—including Thread.join, CompletableFuture, CountDownLatch, CyclicBarrier, Semaphore, single‑thread executor, ReentrantLock with Condition, Phaser, and BlockingQueue—to reliably enforce a specific execution sequence among Java threads, a frequent interview challenge.
A skeptical look at the claim that renaming Java fields to shorter, random names can dramatically improve API latency, examining benchmark data, the actual cost of String.hashCode, reflection mechanics, and the real factors that affect backend performance.
This article breaks down the exact number of objects created when using a string literal versus the new String constructor in Java, detailing interactions with the constant pool, stack, and heap, and demonstrates the resulting reference comparisons with concrete code examples.
Spring Boot 4 launches alongside Spring Framework 7, Spring Data 2025.1 and Spring AI 1.1, delivering a massive upgrade that includes Jakarta EE 11, JDK 25, null‑safety via JSpecify, build‑time optimizations, modern HTTP clients, full‑stack Jackson 3 support, native resilience features, modular auto‑configuration, OpenTelemetry integration, and a dual‑track AI strategy.
When a production pod suddenly hit 90% CPU and dozens of young and full GCs within two hours, the author walks through a step‑by‑step investigation using top, thread‑level monitoring, jstack, and stack analysis to pinpoint a Java‑level memory issue and resolve it.
The article details Alibaba's 2024 campus backend salary bands, compares them with peers, outlines the interview process and project presentation tips, and provides in‑depth technical tutorials on Redis Lua scripts, cache consistency, slow‑query logging, MySQL optimization, Java reflection, WebSocket vs polling, SSE, TCP/UDP, and HTTP vs HTTPS.
This tutorial walks you through setting up the JDK, Maven, and a Jakarta EE‑compatible server, generating a project with the Eclipse Starter, writing a simple REST endpoint, configuring the WildFly Maven plugin, and testing the service via a browser or curl, all with concrete code examples.
This article demonstrates how to use the Adapter pattern together with Nacos dynamic configuration to abstract multiple OSS providers (Minio, Aliyun), configure Spring beans for hot‑refreshable storage selection, and integrate the solution into a microservice’s service, file, and controller layers.
This tutorial walks through the fundamentals of large language models, prompt engineering, and word embeddings, then shows how to set up a LangChain‑based LLM stack in Java using LangChain4j, covering core modules, memory, retrieval, chains, agents, and complete code examples.
This tutorial shows how to replace bulky if‑else or switch logic with Spring Statemachine in a Spring Boot application, covering dependency setup, state and event enums, machine configuration, persistence, service implementation, controller endpoints, and advanced conditional transitions for loan processing.
The article debunks a sensational claim that changing a Java field name can dramatically improve API latency, showing benchmark data, analyzing String.hashCode implementation, reflection overhead, and explaining why such naming tweaks have negligible impact compared to real performance bottlenecks.
This guide walks you through three practical Spring Boot solutions—database scheduled scans, message‑queue delayed queues, and Redis key‑expiration notifications—to automatically cancel unpaid orders after 30 minutes, complete with code samples, architecture diagrams, pros and cons, and best‑practice recommendations.
This guide explains Maven's core plugin architecture, demonstrates practical configurations for flatten‑maven‑plugin and exec‑maven‑plugin, details the MOJO concept behind plugins, and walks through creating, installing, and binding a custom Maven plugin to the build lifecycle.
This guide explains why Thread.stop() is unsafe, compares flag‑based, interruption‑based, and ExecutorService approaches, provides complete Java examples, usage steps, precautions, and advanced techniques for reliably stopping threads while releasing resources correctly.
This guide shows how to view a Maven project's dependency tree using IDEA, the mvn command, or the Maven Helper plugin, identify version conflicts, and resolve them either by adding exclusion entries or by enforcing versions through dependencyManagement, with concrete code examples and screenshots.
Spring Boot 4 launches alongside Spring Framework 7, Spring Data 2025.1 and Spring AI 1.1, introducing Jakarta EE 11, JSpecify null‑safety, build‑time optimizations with Project Leyden, a declarative HTTP client, Jackson 3 support, native API versioning, integrated OpenTelemetry, and a dual‑track AI strategy.
This article explains why returning multiple values in Java can be cumbersome, introduces Apache Commons Lang3’s Pair and Triple utilities—including mutable and immutable variants—shows how to add the Maven dependency, and provides clear code examples that demonstrate their creation, modification, and safe usage in real‑world scenarios.
This article benchmarks memory consumption of concurrent programs across Rust, Go, Java, C#, Node.js, Python, Elixir and others, revealing surprising differences in how threads, async runtimes, and virtual threads scale from a single task up to one million concurrent tasks.
The article walks through a real‑world OOM incident in a high‑traffic hotel information service, detailing the root‑cause analysis of memory exhaustion, JVM heap configuration, GC behavior, heap‑dump inspection, and the concrete optimizations applied to prevent similar failures.
Spring Boot 4 launches alongside Spring Framework 7, Spring Data 2025.1 and Spring AI 1.1, introducing Jakarta EE 11, JDK 25, JSpecify null‑safety, build‑time optimizations with Project Leyden, a new declarative HTTP client, Jackson 3 support, native API versioning, built‑in resilience, OpenTelemetry integration, and a dual‑track AI strategy.
This article provides a comprehensive guide to Java concurrency and related concepts, covering synchronized lock upgrades, object vs class locks, lazy and double‑checked singleton implementations, ThreadLocal mechanics, reflection usage, annotation scopes, JVM class loading, and Redis cluster threading behavior.
This article walks through the concepts, architecture, and hands‑on steps for using Apollo, Ctrip’s open‑source distributed configuration center, covering project setup, Spring Boot integration, dynamic updates, clustering, namespaces, high‑availability design, and Kubernetes deployment.
Spring Boot 4.0 launches with Java 17‑21 support, Jakarta EE 11, Servlet 6.1, virtual‑thread concurrency, modularization for GraalVM, new declarative HTTP client, fluent JDBC/JMS APIs, built‑in resilience annotations, and migration guidance for existing Spring Boot projects.
This guide shows how to view the Maven dependency tree in IntelliJ, use the mvn dependency:tree command, leverage the Maven Helper plugin, identify conflicting JARs, and resolve them with exclusion rules or dependencyManagement to ensure the correct versions are used.
This article explains why traditional string matching and regex struggle with large keyword sets, introduces a DFA‑based solution using a Trie tree for linear‑time detection, provides full Java implementations, shows real‑world integration scenarios, and explores advanced optimizations such as double‑array tries, Aho‑Corasick automata, and sharding with Bloom filters.
A Java backend project upgraded from MyBatis 3.5.0 to MyBatis‑Plus 3.1.1 encountered a LocalDateTime conversion exception caused by an outdated MySQL connector, and the article walks through version diagnostics, connector upgrades, and additional validation bugs that surfaced during production.
The article explains how Easy Code Reader MCP Server integrates with Joycode and large language models to automatically retrieve and analyze Java source code across multiple projects or JAR files, improving code‑agent accuracy and developer productivity.
This article explains how the Easy Code Reader MCP server integrates with large language models to automatically locate, read, and analyze Java source code across multiple micro‑services and JAR files, improving code‑agent accuracy and developer productivity through a set of practical tools and step‑by‑step examples.
Spring AI 1.1.0 arrives with a major overhaul, adding out‑of‑the‑box Model Context Protocol support, five‑mode prompt caching that can cut LLM costs by up to 90%, reasoning APIs, recursive advisors, a broadened model ecosystem, enhanced vector‑store and chat‑memory options, and richer observability integrations.
Learn how Maven‑mvnd accelerates Java project builds by keeping a persistent daemon, reducing JVM startup overhead, lowering CPU and memory usage, and offering seamless migration from Maven, with detailed installation, configuration, usage steps, and a speed comparison against traditional Maven builds.
The article explains how treating the literal string "null" as an empty value in user registration can cause subtle backend errors, illustrates the issue with Java code examples, and offers proper validation techniques to avoid such pitfalls.
This article explains why Retrieval‑Augmented Generation improves LLM accuracy, outlines the key Langchain4j and Ollama3 components, and provides a step‑by‑step Java example—including Maven setup, document ingestion, embedding, similarity search, prompt creation, and response generation—to demonstrate a functional RAG pipeline.
This article breaks down seven common thread‑pool pitfalls frequently asked in Java interviews, explains core‑thread reclamation, warm‑up, pool states, task‑completion checks, the risks of the default ForkJoinPool, and when to use single, fixed, or cached thread‑pool executors.
This tutorial walks through creating a fire‑equipment inspection system where the backend Spring Boot service pushes abnormal device alerts via WebSocket to a Vue‑based front‑end that visualizes device status on a map, covering project setup, WebSocket configuration, client‑side handling, and end‑to‑end testing.
This article explains the challenges of using WebSocket in a microservice environment, presents a lightweight library that abstracts long‑connection clustering, shows how to enable it with @EnableWebSocketLoadBalanceConcept, and details the underlying architecture, selectors, and heartbeat mechanisms for reliable message broadcasting.
This article explains how to use RocketMQ's transactional messages and an atomic‑level wrapper to achieve sub‑second final consistency for million‑scale transaction systems, detailing the two‑phase commit workflow, annotation‑driven implementation, performance optimizations, failure handling, monitoring, and suitable use cases.
This guide shows how to add Spring Boot WebSocket support, configure a server endpoint, implement lifecycle callbacks, and secure connections with JWT validation, providing a complete solution for high‑frequency real‑time data exchange.
This article breaks down Spring’s layered architecture and walks through ten core design patterns—factory, singleton, proxy, template method, observer, adapter, decorator, strategy, chain of responsibility, facade, and delegate—showing how they appear in real interview scenarios and how mastering them can turn a tough interview question into a winning advantage.
Spring Boot 4 adopts JSpecify’s null‑safety annotations, replacing JSR‑305, to make nullability explicit at compile time; using @NullMarked and @Nullable with tools like NullAway, developers can catch potential NPEs early, reduce defensive checks, improve API contracts, and handle collections and parameters more safely.
This article examines the detailed steps and timing of establishing a MySQL connection from a Java web application, measuring network round‑trips and total latency, and demonstrates how even a minimal connection can consume hundreds of milliseconds, making connection pooling essential for high‑traffic services.
This article explains how Spring Framework 7 introduces the BeanRegistrar interface to replace the cumbersome ImportBeanDefinitionRegistrar, demonstrating the new API with concise code examples, comparing old and new approaches, and providing a complete practical example for dynamically registering beans based on runtime configuration.
This article provides a comprehensive technical walkthrough of Tomcat, covering its connector and container architecture, lifecycle management, key design patterns such as Composite and Template Method, custom class‑loading mechanisms, hot‑reload process, and includes essential code snippets and diagrams for developers.
The article examines how MyBatis leverages around ten classic design patterns—grouped into Creational, Structural, and Behavioral categories—to decouple complex ORM logic, describing each pattern’s role, typical usage scenarios, and related components within the framework.
This article explains Redis Pipeline’s core principle of batching commands to reduce network round‑trips, presents benchmark data showing up to 17‑fold speedups, details real‑world use cases such as cache warm‑up, heartbeat reporting, and high‑traffic events, and provides best‑practice guidelines on batch sizing, error handling, cluster constraints, and comparisons with transactions and Lua scripts.
The November 2025 TIOBE ranking shows Python still on top, but C# is rapidly gaining ground and may surpass Java for the first time in history, driven by cross‑platform .NET, open‑source momentum, modern language features, and strong backing from Microsoft and the cloud ecosystem.
Spring Boot 4 and the entire Spring family now implement full null‑safety by adopting JSpecify annotations, enabling compile‑time checks that eliminate NullPointerException, while providing a roadmap for future Java platform null‑type support and detailing the upgraded modules and tooling.
ByteDance’s recent salary announcements show higher offers up to 40K, while the company’s rigorous backend interview covers Java heap OOM analysis, JVM tuning, thread‑pool configuration, Redis expiration strategies, MQ usage, network request flow, and algorithm challenges, providing a comprehensive technical deep‑dive for candidates.
The article dissects XXL-JOB's communication layer, showcasing Netty HTTP usage, a full asynchronous processing pipeline, dynamic proxy abstraction, request‑ID based thread wake‑up, and detailed Java code examples that illustrate how the scheduler and executor achieve high‑throughput remote job execution.
JDK 25 introduces the generational Shenandoah garbage collector as a production‑ready feature, offering lower pause times, higher throughput, and better memory efficiency compared to G1 and ZGC, while remaining optional via the -XX:ShenandoahGCMode=generational flag and preserving compatibility with existing scripts.
This article walks through extracting images from PDF files in a SpringBoot application and using Tess4j to perform OCR, comparing popular OCR libraries, showing configuration details, code snippets, and tips for improving accuracy and performance.
This article explains why services must be gracefully shut down before leveraging Spring Event, how startup timing can cause event loss, which consistency scenarios suit or reject publish‑subscribe, and practical reliability techniques such as retries, idempotence, and fault reporting.
Learn step‑by‑step how to set up a basic CI/CD workflow using Jenkins, Maven, and Git on three servers—GitLab for source control, Jenkins for building a Spring Boot JAR, and a test server for deployment—covering prerequisites, environment setup, Jenkins configuration, and post‑deployment scripts.
This article explains how the TOON data‑serialization format reduces token usage and improves accuracy for large language model calls compared with traditional JSON, provides benchmark results, outlines scenarios where TOON is advantageous or unsuitable, and shows Java integration examples.
This step‑by‑step guide explains why Amazon S3 is chosen as a universal protocol, walks through creating a Spring Boot project, defining configuration properties, implementing an OSS template, auto‑configuring beans, packaging the starter, and testing it against services like MinIO, Alibaba OSS, and Tencent COS.
Spring Framework 7 introduces a new baseline on JDK 17/25, upgrades to Jakarta EE 11, Kotlin 2.2 and GraalVM 25, removes several legacy APIs such as spring‑jcl and javax.annotation, deprecates features like RestTemplate and XML MVC config, and adds powerful capabilities including programmatic bean registration, enhanced HTTP client support, and improved testing extensions.
This tutorial walks you through creating a scalable, stateless authentication and authorization solution for Spring Boot 3.x applications using JWT, covering project setup, token generation, method‑level security, automatic token renewal, blacklist handling, and common troubleshooting tips.
This guide explains how to achieve hot code replacement in Spring Boot projects without restarting the application, covering three approaches—spring-boot-devtools, IntelliJ IDEA's HotSwap plugin, and JRebel—along with configuration steps, demo commands, and practical tips for faster development cycles.
This article combines practical salary insights for Java developers at Transsion with a deep dive into Java fundamentals—including the compilation pipeline, JVM benefits, differences from C++, exception handling, core collection frameworks, concurrency concepts, interview preparation tips, and essential AI knowledge for developers.
This article explains how Nacos, an open‑source dynamic naming and configuration service, was used in a micro‑service project, the two performance problems encountered—configuration fetch timeouts and server‑side QPS throttling—and the step‑by‑step optimizations (memory caching, fallback values, pre‑fetching and listener registration, and limit adjustments) that resolved them.
The article walks through replacing MyBatis 3.5.0 with MyBatis‑Plus 3.1.1 in a legacy Java project, uncovers version‑specific LocalDateTime conversion failures, shows how upgrading mysql‑connector‑java resolves them, and reflects on the broader impact of component upgrades on production stability.
Fast‑Retry is a high‑performance asynchronous retry framework that can handle millions of tasks with far lower latency than traditional synchronous retry libraries like Spring‑Retry or Guava‑Retry, thanks to its non‑blocking design, customizable retry logic, and support for both programmatic and annotation‑based usage.
The article explains why MyBatis can execute database queries without concrete method implementations by using JDK dynamic proxies, detailing the roles of MapperProxy, MapperMethod, SqlSession and Executor, and walks through the four‑step process from proxy creation to result mapping.
Explore two hands‑on Selenium WebDriver examples that leverage JavaScriptExecutor to automate a login flow with visual element highlighting, retrieve page metadata, and perform asynchronous scrolling, while learning practical code snippets, execution tips, and troubleshooting strategies for robust web UI testing.
This guide outlines a flexible, modular Java backend architecture designed to improve delivery efficiency and reduce coupling, detailing the purpose, scope, project structure, module classifications, dependency rules, package management, and build configuration for architects and backend engineers.
Learn why logging is essential in Java applications, explore Spring Boot’s built‑in SLF4J framework, discover how to print, configure levels, persist logs, customize formats, manage file rotation, and simplify logging with Lombok, all through clear examples and practical guidance.
This tutorial explains how to use the pure‑Java library docx4j in a Spring Boot application to automatically convert uploaded .docx files into high‑quality PDFs, covering Maven dependencies, a utility class, controller implementation, and platform‑specific font handling for Windows and Linux.
This article explains the inner workings of Java's ThreadLocal, why it fails to propagate context in asynchronous scenarios, compares manual passing and decorator‑based approaches, introduces the TransmittableThreadLocal (TTL) library with its CRER workflow, and provides a structured interview answer that showcases deep architectural insight.
This article explains how to transfer the current user ID extracted from a JWT token in a filter to Spring MVC controller methods using a custom HandlerMethodArgumentResolver, highlighting drawbacks of ThreadLocal and request attributes, and demonstrating a type‑safe, extensible solution with code examples.
This guide shows how to let users upload a JAR that contains a custom implementation of a predefined Java interface, then hot‑replace the implementation at runtime using either Spring‑managed bean injection or pure reflection, with full code examples and a test harness.
This article reviews Spring AI's evolution, architecture, and key features—including unified APIs, prompt engineering, streaming, RAG, multi‑modal support, and agent workflows—showing how Java back‑ends can efficiently expose AI capabilities without handling low‑level model logic.
This article explains the challenges of Android app crashes and presents a comprehensive, cloud‑native solution that captures both Java/Kotlin and native crashes, details the underlying mechanisms such as UncaughtExceptionHandler, signal handling, minidump generation, stack unwinding, and offers practical guidance for integrating reliable crash reporting into mobile applications.
This article combines salary insights for ZTE offers, practical internship interview tips, a deep dive into Spring bean‑injection annotations, a side‑by‑side comparison of MySQL InnoDB and MyISAM, Redis usage patterns, and JVM OutOfMemoryError diagnostics to help you excel in Java backend interviews.
This article explains how merging similar requests using Hystrix Collapser, a custom BatchCollapser, and Guava's ConcurrentHashMultiset can dramatically reduce downstream load, improve overall throughput, and provides detailed implementation, configuration, and scenario guidance for each technique.
This article details how the Aone Copilot Agent, guided by carefully crafted prompts, automates unit test creation and code modifications for a Java Spring Boot GoodsDomainRepository, achieving a 50% code adoption rate and outlining prompt design, test architecture, execution flow, and best‑practice recommendations.
Spring Boot 4 now natively supports API versioning with four strategies—Path Segment, Request Header, Query Parameter, and Media Type—offering intuitive configuration, smart routing, and seamless content negotiation, and the article provides detailed setup, code samples, and best‑practice guidance for reliable version control.
Learn how to quickly generate and customize clear inheritance diagrams for Java Servlet classes using IntelliJ IDEA’s diagram feature, including viewing relationships, filtering classes, inspecting members, adjusting visibility, adding classes, and navigating source code—all illustrated with step‑by‑step screenshots.
This article reveals nine advanced Spring Boot YAML configuration techniques—including default environment variables, external file imports, application grouping, multi‑profile activation, conditional imports, custom structured properties, random values, multi‑document files, and anchors/aliases—each illustrated with code samples to help developers master robust configuration practices.
This step‑by‑step guide shows how to set up a three‑server environment with GitLab, Jenkins, and a test machine, create a GitLab project and token, configure Maven and Jenkins, and automate building, deploying, and running a Spring Boot JAR using SSH and cleanup scripts.
This comprehensive guide walks you through Maven's core concepts—including repository setup, basic POM coordinates, dependency management, handling transitive dependencies, exclusions, variable properties, multi‑module projects, and powerful plugins such as jar, assembly, and shade—while also covering build‑time settings like compiler version, resource exclusion, and main‑class configuration.
Redis uses multiple expiration and eviction mechanisms—including lazy deletion, periodic scanning, and memory eviction—to balance performance and memory usage, and this guide explains each strategy, shows how to configure them, and provides Java/Jedis code examples for setting TTLs, handling large objects, preventing cache avalanches, and monitoring stats.
The article compares storing user objects in Redis using plain SET with JSON versus using HASH fields, providing code demos, benchmark results, memory and concurrency analysis, and practical guidelines on when to choose each approach for optimal performance and safety.
The article explains how Jackson Views can consolidate multiple DTO classes into a single DTO by using view interfaces and @JsonView annotations, dramatically reducing code duplication, simplifying maintenance, and providing flexible field selection for different API scenarios.
This technical guide explains the underlying mechanisms of Android crash collection for both Java/Kotlin and native code, outlines a four‑step capture process, compares popular solutions, and provides concrete implementation details—including signal handling, minidump generation, and stack deobfuscation—to help developers reliably record and diagnose app failures.
The article explains how intermittent 503 errors in a Java service are caused by long‑lasting Full GC pauses, walks through log analysis, shows how to use jstat, jcmd and MAT to pinpoint the problem, and provides a complete set of JVM tuning flags to eliminate the issue.
