JDBC on JAVAPRO International

Open J Proxy 0.5.0-beta — The Caching and Read/Write Splitting Release

Mon, 22 Jun 2026 12:00:02 +0000

When we shipped 0.4.0-beta, the core value of Open J Proxy was already clear: a database control plane for Java applications that lets you scale dozens of application instances without overwhelming your database, because the server — not the application — owns and controls the real connection pools. What 0.5.0-beta adds on top of that foundation is two features that take the pressure off the database even further. The first is query result caching: the ability to answer repeated SELECT queries directly from memory without touching the database at all. The second is read/write splitting: the ability to automatically route reads to replica databases and leave the primary free for writes. Together, they advance OJP’s role as a full database control plane — governing not just connections but query results, routing decisions, and admission under load.

Open J Proxy 0.4.0-beta: Flexibility, Observability, and a Big Step Toward Production

Tue, 17 Mar 2026 12:00:01 +0000

By Rogerio Robetti – OJP Founder and Lead Developer

Every few releases a project crosses a threshold where the changes stop being incremental and start reshaping how the system can be used.
Open J Proxy 0.4.0-beta is one of those releases.

This version touches nearly every layer of OJP: integration with popular Java frameworks, observability, security, extensibility, and developer tooling. The result is a release that makes OJP easier to integrate, easier to operate, and far more flexible internally.

Open J Proxy v0.3.0-beta: The High-Availability, Multinode, Cross-Language Leap Forward

Wed, 17 Dec 2025 12:00:01 +0000

By Rogerio Robetti - OJP Founder and Lead Developer
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The Open J Proxy (OJP) project has been busy—very busy. How busy? Try more than a hundred files changed, thousands of lines of code, and enough new distributed-systems machinery to make even seasoned architects clutch their coffee mugs in awe. If the previous v0.2.0-beta release was OJP discovering its superpowers, then v0.3.0-beta is OJP joining the Avengers.

In this article, we’ll walk through the most important enhancements, explain what they mean for Java developers, and crack a few jokes along the way (strictly at the expense of flaky servers).

Open J Proxy 0.2.0 Beta — Bringing Freedom, Control, and Intelligence to Database Connections

Wed, 29 Oct 2025 12:00:02 +0000

By Rogerio Robetti, founder of Open J Proxy (OJP)
(Open source project — Apache 2.0 licensed)

🚀 Rethinking the Way Java Talks to Databases

Every Java developer has fought the same battle at some point — an app scaling beautifully on the application side, only to hit a wall when the database can’t keep up. Connection storms, resource starvation, slow queries hogging pools, unresponsive services.
We’ve all been there.

Open J Proxy (OJP) was born to solve exactly that.

🚀 Open J Proxy (OJP) 0.1.1-beta: Databases Deserve a Bodyguard

Mon, 15 Sep 2025 12:00:02 +0000

Dublin — Today marks a milestone for Java developers everywhere: the first beta release of Open J Proxy (OJP), version 0.1.1-beta, is live. And it’s not just another JDBC wrapper. OJP is here to play bodyguard for your database, keeping it cool and collected while your applications scale like there’s no tomorrow.

Licensed under Apache 2.0, OJP is free, open, and ready for the community to hack, test, and push forward.

Java and Databases: From SQL to JPA and NoSQL

Thu, 19 Jun 2025 07:00:02 +0000

Over the past 30 years, Java has significantly changed the way applications interact with databases. In the early days, Java applications typically used a client/server model and a three-tier architecture, where SQL statements were often embedded as string literals within the application. These statements were sent to databases through straightforward interfaces such as JDBC.

As programming paradigms shifted towards Object-Oriented Programming (OOP), Java developers began to integrate business logic more seamlessly into data structures. This move represented a shift from purely database-centric models to application-first designs. This transition enabled data abstraction through application programming interfaces (APIs), allowing SQL database tables and rows to be represented as classes and objects within the application. As a result, data sharing and persistence also evolved, moving from strictly normalized relational tables to document-oriented databases that align more closely with object-oriented structures and specific use cases.

A Look Back at Java's 30-year Journey with Databases

Wed, 21 May 2025 07:00:01 +0000

Written by Brian Sam-Bodden & Raphael De Lio

When Java 1.0 launched in 1996, both the language and the internet were very different from today. At the time, the web was mostly static, and Java’s promise to “caffeinate” the web by supercharging it with interactive games and animations was promising. According to David Banks, who wrote to Wired in 1995, Java was the hottest thing since Netscape.

To put it in a better perspective, Java’s origins date back to 1990 when Sun Microsystems struggled to find its place in the consumer market. At the time, they developed Oak, a new programming language designed to be platform-independent, lightweight, and ideal for networked environments. Their first attempt was to commercialize Oak for interactive televisions.

Vector Embedding in Java Applications: Gen-AI Functions Directly from the Database

Tue, 06 May 2025 11:30:01 +0000

Generative AI (GenAI) has rapidly advanced in recent years and is increasingly finding its way into practical software development. What was once considered a research topic is now becoming a tool for everyday developers — including in the Java space. Vector embeddings play a key role here: they enable functions like semantic search, text classification, or recommendation systems, opening up entirely new application possibilities.

But how can these technologies be integrated into existing Java applications without the need for complex frameworks or external cloud services?