A Beginner’s guide to ACID and database transactions

Transactions are omnipresent in today’s enterprise systems, providing data integrity even in highly concurrent environments. So let’s get started by…

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Good vs Bad Leader

Software is more about people than technology. When I graduated from college, I thought I only had to master technical…

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NoSQL is not just about BigData

There is so much debate on the SQL vs NoSQL subject, and probably this is our natural way of understanding…

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MongoDB Facts: Lightning speed aggregation

In my previous post, I demonstrated how fast you can insert 50 millions time-event entries with MongoDB. This time we…

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Why I like Spring bean aliasing

Spring framework is widely used as a dependency injection container, and that’s for good reasons. First of all, it facilitates…

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Hibernate Facts: Always check Criteria API SQL queries

Criteria API is very useful for dynamically building queries, but that’s the only use case where I’d use it. Whenever…

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JOOQ Facts: From JPA Annotations to JOOQ Table Mappings

JOOQ is a neat framework, and it addresses a long issue I’ve had with advanced dynamic filtered queries. While Hibernate…

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Hibernate Facts: Integration testing strategies

I like Integration Testing, it’s a good way to check what SQL queries Hibernate generates behind-scenes. But Integration Tests require…

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MongoDB Facts: 80000+ inserts/second on commodity hardware

While experimenting with some time series collections I needed a large data set to check that our aggregation queries don’t…

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