The No-Nonsense Guide to Spring Profiles (Plus a Simple Way to Merge Them)
If you’ve ever accidentally connected your local laptop to the production database, you know why Spring Profiles exist. It’s a […]
Developer Guides
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JSON to Java Record Converter | Online Developer Tools
JSON to Java Record Converter Instantly convert JSON objects into Java 14+ Record classes. Eliminate boilerplate code like getters, setters,
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ISO 8601 vs RFC 3339: The JSON Date Format Standard Guide
ISO 8601 vs RFC 3339: Which Date Format Should APIs Use? You are designing a REST API. You reach the
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How to Parse Log Timestamps: Apache, Nginx & Syslog Guide
Parse log timestamp It is 3:00 AM. PagerDuty just woke you up. The production API is throwing 500 errors, and
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Stop Using Moment.js: Native Date Parsing in JavaScript (2025) | Javascript date parsing
Javascript date parsing I know it’s the first library when you do npm install on a new project. It is
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Python strptime & strftime Cheat Sheet (2025 Format Guide)
Python strptime & strftime Cheat Sheet I think It happens to every Python developer at least once a week. You
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SimpleDateFormat vs DateTimeFormatter: Why It is Broken & Fixed
SimpleDateFormat vs DateTimeFormatter It starts as a minor anomaly. A few records in your database have dates from the year
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Top 5 Free Developer Tools to Convert JSON to Flowcharts | Free developer tools
Free developer tools The modern developer’s stack is overflowing. We have IDEs, linters, debuggers, containers, and pipeline runners. But there
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The Ultimate JSON Schema Viewer for Complex Data Structures
JSON schema viewer When you are learning to code, tutorials are simple. You get a user object with a name
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Automate Your Docs: Convert JSON to Mermaid JS Flowcharts
JSON to Mermaid JS There is an old saying in software engineering: “The only up-to-date documentation is the code itself.”