Antony Denyer

When I first started writing software, a common practice was to use an emulator or a lightweight version of something for your development environment. The most common of these were in-memory databases, things like SQLite and H2. They are lightweight, easy to use and easy to segregate. You didn’t need... [Read More]

Unfortunately it looks like spring-data will not autowire up queries that will perform an in query under the hood. [Read More]

Mongo doesn’t appear to perform particularly well when querying large-ish collections with $or queries. For some reason, it can’t figure out which index to use and often ends up doing a COLLSCAN. Say you have the following document structure representing user transactions: [Read More]

When building systems you will quite often have to make the tradeoff between having a system that is loosly coupled or one that is simple. When we think of tight coupling we tend to think of it as a bad thing. But that is not always the case, you need... [Read More]

TL;DR [Read More]