Scaling an Elasticsearch Index – Introduction
03/31/15
A well-known design decision of Elasticsearch is that a fixed number of shards has to be specified when creating an... Read more
Posts by Patrick Peschlow
Transactions in Elasticsearch
10/07/14
Earlier this year a customer mentioned a search requirement that I hadn’t really thought about before: How to achieve transactions... Read more
Elasticsearch Indexing Performance Cheatsheet
05/09/14
You plan to index large amounts of data in Elasticsearch? Or you are already trying to do so but it turns out that throughput is... Read more
Elasticsearch Monitoring and Management Plugins
03/31/14
Elasticsearch offers a highly useful plugin mechanism as a standard way for extending its core. Plugins enable developers to add... Read more
Useful JVM Flags – Part 8 (GC Logging)
01/05/14
The last part of this series is about garbage collection logging and associated flags. The GC log is a highly... Read more
Useful JVM Flags – Part 7 (CMS Collector)
10/16/13
The Concurrent Mark Sweep Collector (“CMS Collector”) of the HotSpot JVM has one primary goal: low application pause times. This... Read more
Useful JVM Flags – Part 6 (Throughput Collector)
01/01/13
For most application areas that we find in practice, a garbage collection (GC) algorithm is being evaluated according to two... Read more
ForkJoinPool vs. ThreadPoolExecutor
12/07/12
Recently, an article of mine appeared on the German site Heise Developer, and today the English translation was published on The... Read more
Useful JVM Flags – Part 5 (Young Generation Garbage Collection)
08/05/12
In this part of our series we focus on one of the major areas of the heap, the “young generation”.... Read more
Useful JVM Flags – Part 4 (Heap Tuning)
07/29/12
Ideally, a Java application runs just fine with the default JVM settings so that there is no need to set... Read more
Useful JVM Flags – Part 3 (Printing all XX Flags and their Values)
07/22/12
With a recent update of Java 6 (must have been update 20 oder 21), the HotSpot JVM offers two new... Read more
Useful JVM Flags – Part 2 (Flag Categories and JIT Compiler Diagnostics)
07/15/12
In the second part of this series, I give an introduction to the different categories of flags offered by the... Read more
Useful JVM Flags – Part 1 (JVM Types and Compiler Modes)
07/08/12
Modern JVMs do an amazing job at running Java applications (and those of other compatible languages) in an efficient and... Read more