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Earlier days secured OrderHub at the URL: the filter chain says GET /api/** needs ROLE_USER and POST /api/** needs ROLE_ADMIN. That's a great coarse g
Project reports, product manuals, technical documents, and other long-form Word files often contain multiple chapters and sections. As the content cha
A POST /orders in this demo takes 178 milliseconds. The OpenTelemetry Java agent, attached with a single JVM flag and no code changes, will tell you t
Follow these 10 "foolproof" steps to guarantee your database never suffers a duplicate row again. Trust me, these are enterprise-grade, battle-tested
Artificial Intelligence has moved from being something handled by specialized data-science teams to becoming a feature that application developers can
Tired of manually crafting personalized letters, labels, or invoices? Mail merge in Microsoft Word can automate that, but scaling it for dynamic repor
Day 38 gave OrderHub a Grafana dashboard, so I can see the p99 climb. But a metric is an aggregate over ALL requests — it says what and when, never wh
Java Concurrency: Mastering ConcurrentSkipListMap for Machine Coding In high-throughput Low-Level Design (LLD) interviews, building concurr
I've been running Solon apps in production for a while now, and one thing that keeps surprising people is how the server engine works. Not "which ser
I've been burned by JSR 380 enough times to appreciate a validation framework that doesn't drag in a whole ecosystem of dependencies. Solon's validati
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Your API is a promise. Every client that integrates with it is holding you to that promise, often for years after you've forgotten the code that made
A month and a half ago, my team had to answer a deceptively simple question: Should every carrier integration be its own microservice, or should all o
log.info("user logged in") looks free. It isn't. Behind that one line is a chain of decisions — buffer or not, flush or not, block or drop, same thre
Hackers are actively exploiting a remote code execution (RCE) zero-day vulnerability in Fastjson, a popular Java library used for parsing JSON data. T
Replace "spring Boot" instead of "Java" in the sentence public class SpringBoot { public static void main(String[] args){ String str = "
Clean State Machines in Java 22+: Stop Polluting Scope with JEP 456 Unnamed Patterns High-throughput event loops in modern Java microservic
I am currently preparing for the Oracle Certified Professional Java SE 21 certification. In the age of AI, some people may wonder why developers stil
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