Blog: vlad mihalcea


279 blogs updated: 28 min. ago
How does the 2PL (Two-Phase Locking) algorithm work
Introduction The 2PL (Two-Phase Locking) algorithm is one of the oldest concurrency control mechanisms used by relational database systems t...
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02-12-2019 08:12:58 vlad mihalcea Advanced
Bulk update optimistic locking with JPA and Hibernate
Introduction In this article, we are going to see how we can adjust a bulk update statement so that it takes optimistic locking into conside...
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26-11-2019 11:46:17 vlad mihalcea Advanced
PostgreSQL trigger consistency check
Introduction In this article, we are going to see how to implement a non-trivial consistency check using a PostgreSQL INSERT and UPDATE trig...
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22-11-2019 09:24:08 vlad mihalcea Advanced
The best way to fix the Hibernate MultipleBagFetchException
Introduction If you've been using Hibernate for some time, there is a good chance you bumped into a MultipleBagFetchException issue: org.hib...
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12-11-2019 20:04:37 vlad mihalcea Advanced
Spring Boot performance tuning
Introduction While developing a Spring Boot application is rather easy, tuning the performance of a Spring Boot application is a more challe...
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05-11-2019 09:39:39 vlad mihalcea Advanced
A beginner's guide to database deadlock
Introduction In this article, we are going to see how a deadlock can occur in a relational database system, and how Oracle, SQL Server, Post...
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29-10-2019 12:25:56 vlad mihalcea Advanced
The best way to fetch multiple entities by id using JPA and Hibernate
Introduction In this article, we are going to see how we can load multiple entities by id at once when using JPA and Hibernate. Loading mult...
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24-10-2019 11:48:36 vlad mihalcea Advanced
How to map SQL Server JSON columns using JPA and Hibernate
Introduction In this article, we are going to see how easy it is to map an SQL Server JSON column when using the Hibernate Types project. No...
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15-10-2019 12:10:21 vlad mihalcea Advanced
JDBC Driver Maven dependency list
Introduction Ever wanted to connect to a relational database using Java and didn't know which JDBC Driver Maven dependency to use? If so, th...
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08-10-2019 10:49:08 vlad mihalcea Advanced
Six years of blogging
Quality over quantity I've been blogging for six years already, and every year I like to write a report with the achievements I've made over...
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30-09-2019 09:06:34 vlad mihalcea Advanced


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