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A Guide to SirixDB 1. Overview In this tutorial, we’ll give an overview of what SirixDB is and its most important design goals. Next, we’ll give a walk through a low level cursor-based transactional API. 2. SirixDB Features SirixDB is a log-structured, temporal NoSQL document store, which stores evolutionary data.… Continue Reading sirix
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Full-text Search with Solr 1. Overview In this article, we’ll explore a fundamental concept in the Apache Solr search engine – full-text search. The Apache Solr is an open source framework, designed to deal with millions of documents. We’ll go through the core capabilities of it with examples using Java… Continue Reading full-text-search-with-solr
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A Quick Look at R2DBC with Spring Data 1. Introduction R2DBC (Reactive Relational Database Connectivity) is an effort presented by Pivotal during Spring One Platform 2018. It intends to create a reactive API to SQL databases. In other words, this effort creates a database connection using fully non-blocking drivers. In… Continue Reading spring-data-r2dbc
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Spring Boot With H2 Database 1. Overview In this tutorial, we’ll explore using H2 with Spring Boot. Just like other databases, there’s full intrinsic support for it in the Spring Boot ecosystem. Further reading: List of In-Memory Databases A quick review of how to configure some of the more popular… Continue Reading spring-boot-h2-database
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Introduction to ActiveJDBC 1. Introduction ActiveJDBC is a lightweight ORM following the core ideas of ActiveRecord, the primary ORM of Ruby on Rails. It focuses on simplifying the interaction with databases by removing the extra layer of typical persistence managers and focuses on the usage of SQL rather than creating… Continue Reading active-jdbc
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A Quick Guide to Apache Geode 1. Overview Apache Geode is a distributed in-memory data grid supporting caching and data computation. In this tutorial, we’ll cover Geode’s key concepts and run through some code samples using its Java client. 2. Setup First, we need to download and install Apache Geode… Continue Reading apache-geode
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Using InfluxDB with Java 1. Overview InfluxDB is a high-performance store for time-series data. It supports insertion and real-time querying of data via a SQL-like query language. In this introductory article, we’ll demonstrate how to connect to an InfluxDb server, create a database, write time-series information, and then query the… Continue Reading java-influxdb
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3 Common Hibernate Performance Issues and How to Find Them in Your Log File Logging Persistence Hibernate 1. Introduction You’ve probably read some of the complaints about bad Hibernate performance or maybe you’ve struggled with some of them yourself. I have been using Hibernate for more than 15 years now… Continue Reading hibernate-common-performance-problems-in-logs
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Intro to OData with Olingo 1. Introduction This tutorial is a follow-up to our OData Protocol Guide, where we’ve explored the basics of the OData protocol. Now, we’ll see how to implement a simple OData service using the Apache Olingo library. This library provides a framework to expose data using… Continue Reading olingo
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SQL Injection and How to Prevent It? 1. Introduction Despite being one of the best-known vulnerabilities, SQL Injection continues to rank on the top spot of the infamous OWASP Top 10’s list – now part of the more general Injection class. In this tutorial, we’ll explore common coding mistakes in Java that… Continue Reading sql-injection
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