High-Performance Java Persistence Newsletter, Issue 29

Imagine having a tool that can automatically detect JPA and Hibernate performance issues. Hypersistence Optimizer is that tool!

Introduction

Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system using Java.

Articles

The pick of this edition is this article from Percona that presents the new pg_stat_monitor tool they developed to simplify PostgreSQL performance monitoring.

The pg_stat_monitor builds on top of the existing pg_stat_statement PostgreSQL extension and aggregates query calls into time windows, called buckets. This allows you to capture the performance statistics during traffic spikes, which would be difficult to trace with the standard pg_stat_statement tool since it levels up short-term spikes.

When navigating large result sets using pagination, the default SQL Offset pagination is not very suitable for seeking through an associate B+Tree index. Therefore, the Keyset Pagination technique aims to fix this problem and provide a much more efficient implementation. For more details about this technique, check out this article.

If you are using PostgreSQL and want to set up a Multi-Primary replication scheme, then this article evaluates several options you could use.

If you used SQL Server and got used to the NEWSEQUENTIALID function that allows you to generate GUID numbers that follow a sequential pattern and want to achieve the same goal in PostgreSQL, then this sequential-uuids extension will surely help you.

If you are using JPA or Hibernate, then you should definitely use Blaze Persistence as well because it provides support for many features that are not present in JPA or Hibernate. To get an idea of its capabilities, check out this article which shows how you can use Blaze Persistence to build complex queries dynamically.

Percona PMM tool allows you to monitor and manage both MySQL and PostgreSQL database systems. To see how you can use PMM to track a performance problem, check out this article.

Best Tweets

Here are the best tweets I posted since the last newsletter:

Project Releases

MySQL 8.0.26 has been released and provides many new features and bug fixes as well.

Hibernate ORM released two versions since the last newsletter episode:

The PostgreSQL JDBC Driver released two new versions:

The 2.12.1 version of the Hibernate Types project has been released and fixes one issue related to ZonedDateTime handling.

Get in touch with my latest articles!

StackOverflow Answers

The following StackOverflow answers have been trending over the past two weeks:

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