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Showing posts with the label In-memory data grid

Apache Ignite - Examples on Data grid, compute grid, service grid and executing SQL queries

In this article, we will show few examples on using Apache Ignite as Compute Grid, Data Grid, Service Grid and executing SQL queries on Apache Ignite. These are basic examples and use the basic api available. There will be few posts in near future which explains the available API in Compute Grid, Service Grid and Data Grid. Ignite SQL Example Apache Ignite comes with JDBC Thin driver support to execute SQL queries on the In memory data grid. In the example below, we will create tables, insert data into tables and get data from tables. I will assume that you are running Apache Ignite on your local environment otherwise please read setup guide for running Apache Ignite server. Creating Tables try (Connection conn = DriverManager.getConnection("jdbc:ignite:thin://"); Statement stmt = conn.createStatement();) { //line 1 stmt.executeUpdate("CREATE TABLE City (id LONG PRIMARY KEY, name VARCHAR) WITH \"template=replicated\"");

Introduction to Apache Ignite

This is an introduction series to Apache Ignite. We will discuss about Apache Ignite, its features, usage as in-memory data grid, compute grid, distributed caching, near real-time caching and persistence distributed database. What is Ignite? It is in-memory compute platform . It is in-memory data grid . Durable , strongly consistent and highly available. Providing option to run SQL like queries on cache (Providing JDBC API to support this). Durable memory Apache Ignite is memory-centric platform based on durable memory architecture. It allows you to store and processing data on in-memory(RAM) and on disk (If Ignite Native persistence is enabled). When the Ignite native persistence is enabled, it will treat disk as superset of data, which is cable of surviving crash and restarts. In-memory features RAM is always treated as first memory tier, all the processing happens there. It has following characteristics. Off-heap based: All the data and indexes are stored outs