Manually Analyze JFR Files to Find Optimization Targets A systematic guide to reading Java Flight Recorder dumps and turning the data into faster startup... 2026-8-2 20:57:29 | 阅读: 19 | 收藏 | GT's Blog - blog.gtiwari333.com jfr recording dimension idle cds

Building a Dual-Mode Monolith/Microservices System with Spring Boot - One Codebase, Two Topologies How to build a single codebase that deploys as either a monolith or independent microservices — an... 2026-8-2 18:58:2 | 阅读: 21 | 收藏 | GT's Blog - blog.gtiwari333.com monolith sku quantity dual

Spring Boot - update response of every API using ResponseBodyAdvice 文章介绍了在Spring Boot应用中使用@ControllerAdvice结合ResponseBodyAdvice来统一处理响应体的方法。通过自定义的ObjectResponseAdvice类，在全局范围内将原始响应包装到包含额外信息（如时间戳、跟踪ID和状态码）的JSON对象中。这种方法简化了代码维护，并支持多种响应类型（如字符串、整数、Map和自定义对象），同时确保与现有返回ResponseObject的方法兼容。... 2025-3-11 01:5:0 | 阅读: 10 | 收藏 | GT's Blog - blog.gtiwari333.com spanid traceid tracer

Run a task in a different interval during weekend using Spring Scheduler and Custom Trigger 文章介绍了一种在周末使用不同时间间隔运行任务的方法。通过自定义Spring任务调度器和实现Trigger接口，可以根据业务逻辑动态调整任务执行频率，在周末改为每15分钟运行一次。... 2025-2-27 17:44:0 | 阅读: 9 | 收藏 | GT's Blog - blog.gtiwari333.com weekend dayofweek duration

Append a file into existing ZIP using Java 该Java代码读取输入文件`in.zip`，将其中的`abc.txt`文件内容进行修改（替换字符串并添加当前时间），并将修改后的内容与原ZIP文件的其他内容一起写入输出文件`out.zip`。... 2025-2-27 17:15:0 | 阅读: 13 | 收藏 | GT's Blog - blog.gtiwari333.com entryin zos zipfile

Spring Boot - get Trace and Span ID programmatically 这篇文章介绍了在Spring Boot中如何通过编程方式获取Trace ID和Span ID。通过自动装配Tracer并使用currentSpan()方法获取当前Span对象，可以轻松获得traceId和spanId以用于跟踪和调试。... 2025-2-27 17:8:0 | 阅读: 10 | 收藏 | GT's Blog - blog.gtiwari333.com spanid tracer traceid tips

8 puzzle solver using A* algorithm 8-puzzle is a very interesting and a well known problem in the field of Artificial Intelligence... 2024-6-24 06:26:0 | 阅读: 13 | 收藏 | GT's Blog - blog.gtiwari333.com puzzle tentative openset tile blank

JSP basics - Java Server Pages The JSP - Java Server PagesJSP extension of the servlet technology which offers both scripting (... 2024-6-24 06:24:0 | 阅读: 11 | 收藏 | GT's Blog - blog.gtiwari333.com directives directive iserrorpage getinstance

How to reset “Replace Toner” warning on Brother MFC-L2710DW Printer How to reset “Replace Toner” warning on Brother MFC-L2710DW PrinterHow to reset “Replace To... 2023-7-10 03:25:0 | 阅读: 19 | 收藏 | GT's Blog - blog.gtiwari333.com toner mfc printer tnr arrow

Java PDF to Image Conversion using PDFBox Here are few snippets of code that you can use to convert a PDF file to images eg: tiff, png, mult... 2023-4-24 03:1:0 | 阅读: 32 | 收藏 | GT's Blog - blog.gtiwari333.com pdfrenderer bim imagetype dpi imageio

KeyCloak docker-compose import realm file Example of docker-compose for keycloak 18 with ability to import a realm file:It assumes the realm... 2022-7-17 02:55:0 | 阅读: 293 | 收藏 | blog.gtiwari333.com keycloak realm assumes quay 8082

Kafka - a working docker-compose Here's a working docker-compose that runs zookeeper, kafka and kafka-ui in same network.version: '... 2021-12-2 08:59:0 | 阅读: 85 | 收藏 | blog.gtiwari333.com zookeeper 9093 rmoff 9092 2181

git reset/revert to previous commit Sometimes we "accidentally" merge something that's not ready for release/qa  and need to rollback/... 2021-12-2 08:57:0 | 阅读: 18 | 收藏 | blog.gtiwari333.com uncommitted cherry qa rollback revert

How to make integration tests faster without @DirtiesContext If your only excuse to use @DirtiesContext is to re-initialize database between tests, then this b... 2021-7-17 08:10:0 | 阅读: 27 | 收藏 | blog.gtiwari333.com truncate em referential

JPA/Hibernate get find all Table and Column metadata How to use Hibernate Metadata to find All columns and tablesGetting the Hibernate's Metadata objec... 2021-7-17 06:49:0 | 阅读: 19 | 收藏 | blog.gtiwari333.com hibernate integrator database spi

SpringFox Swagger with Groovy - fixing slow startup / heap space error Story of how we reduced app startup time by 20x and heap usage by 7xFew months ago, we started dev... 2021-7-8 11:44:0 | 阅读: 42 | 收藏 | blog.gtiwari333.com groupid artifactid var1 var2 expand

GIT write useful commit messages What's harder than choosing a variable name? IMO its composing a perfect code comment and commit m... 2021-7-3 02:12:0 | 阅读: 18 | 收藏 | blog.gtiwari333.com dialog jira employer developer choosing

Spring Boot - shutdown and restart application programmatically Today we will be discussing how to shutdown and restart a Spring application programmatically.1) N... 2021-4-19 00:54:0 | 阅读: 25 | 收藏 | blog.gtiwari333.com appctx getmapping

Read Request parameter String from URL in Spring/HttpServlet Read entire query string(request parameter) in Spring Boot/HttpServletIn Spring Boot and other Jav... 2021-3-2 01:57:0 | 阅读: 22 | 收藏 | blog.gtiwari333.com qs nepal ganesh

GIT delete merged branches How to delete merged branches from local copy:When you work on a project for a while, there is a g... 2021-2-23 02:6:0 | 阅读: 23 | 收藏 | blog.gtiwari333.com merged projx egrep remote xargs