Fix the “Login Pool Is Empty and Connection Creation Failed” error with 5 proven solutions for HikariCP, Spring Boot, MySQL, PostgreSQL, JDBC, and database connection pools.

Spring Batch is a powerful module of the Spring framework that provides out-of-the-box implementation for batch processing tasks. It is used in scenarios where data needs to be processed in multiple ...

Prototyping is my favorite part of programming. I like building new stuff and getting things working. It’s no surprise, then, that I am a big fan of MongoDB and NoSQL in general. Don’t get me wrong: I ...

A Spring Boot Microservice Example that includes Eureka Server, Zuul Gatway (JWT and RBA), Spring Cloud Config Server, Hystrix (Circuit Breaker) and three custom services for data. A production-ready ...

Get Trace ID from an exemplar in metrics, then query in Tempo. Query with histogram_quantile(.99,sum(rate(http_server_requests_seconds_bucket{application="app-a", uri ...

Choosing a Java framework is not about which one is best, it's about accepting their tradeoffs of stability, flexibility and complexity. Here's how to evaluate each vs. your needs. Continue Reading ...

If you are creating a new Spring Boot project, one question you will inevitably need to answer is: What database should I use? Luckily, Spring Boot supports many databases such as H2, MySQL, Postgres, ...

The Java ecosystem is bursting with tools and frameworks for just about every programming need. Here are seven open source Java projects you don't want to miss. The Java ecosystem is home to an ...