Caching is hard in various ways. Whenever you're caching things, you have to at least think of: Memory consumption Invalidation In this article, I want to show a flaw that often sneaks into custom cache implementations, making them inefficient for some execution paths. I've encountered this flaw in Eclipse, recently. What did Eclipse do wrong? … Continue reading A Common Mistake Developers Make When Caching Nullable Values
Tag: caching
Java 8 Friday Goodies: Easy-as-Pie Local Caching
At Data Geekery, we love Java. And as we're really into jOOQ's fluent API and query DSL, we're absolutely thrilled about what Java 8 will bring to our ecosystem. We have blogged a couple of times about some nice Java 8 goodies, and now we feel it's time to start a new blog series, the... … Continue reading Java 8 Friday Goodies: Easy-as-Pie Local Caching
Oracle scalar subquery caching
The importance of being able to fully control executed SQL (using jOOQ, or plain JDBC) on large-scale systems becomes obvious every time you need to fine-tune your SQL queries for a specific RDBMS. In this case, we're looking at Oracle and its miraculous scalar subquery caching mechanisms: Usually, the context switch from SQL to PL/SQL … Continue reading Oracle scalar subquery caching