More about Spring Cache Performance

This is a follow up to our last post about Spring’s cache abstraction. As engineers, you gain valuable experience by…

Read More »

Storing and querying trillions of events

This is a second post in series describing our recent infrastructure / architecture transition in Plumbr. The first part focused…

Read More »

Processing billions of events/day

Throughout the lifecycle of a company the IT architecture is bound to change multiple times. There can be many different…

Read More »

Resource leakages: command pattern to the rescue

Over the years of performance monitoring with Plumbr I have faced hundreds of performance issues caused by resource leakages. In this…

Read More »

Resizing the HashMap: dangers ahead

I recently stumbled upon a bug caused by improper usage of java.util.HashMap from multiple threads. The bug was an excellent…

Read More »

How we accidentally doubled our JDBC traffic with Hibernate

This post describes my recent experience with Hibernate ORM. Over the years the framework has not stopped to amaze me…

Read More »

What is promotion rate?

I do believe you are familiar with the Peter principle. In general, the principle is an observation that promotions can…

Read More »

What is allocation rate?

Phrases such as “unsustainable allocation rate” and “you need to keep your allocation rates low” seem to belong to the…

Read More »

Stack smashing detected

 I bet every Java developer has been surprised at some point in the beginning of their career when they first…

Read More »