Is Cassandra 4 compatible with Java?

Is Cassandra 4 compatible with Java?

I'll respond in English as requested!

Cassandra is an open-source NoSQL database that provides a highly scalable and distributed solution for handling large amounts of data. When it comes to compatibility with Java, the answer is a resounding "yes!".

There are several reasons why Cassandra is compatible with Java:

In summary, Cassandra is fully compatible with Java. The DataStax Java driver provides a simple way to interact with Cassandra from within your Java application, while CQL allows you to write queries using a SQL-like syntax. Additionally, many Java-based tools and libraries are available for working with Cassandra, making it easy to integrate into your existing Java-based infrastructure.

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Java cassandra tutorial

I'm happy to help! Here's a comprehensive Java Cassandra tutorial for you:

What is Apache Cassandra?

Apache Cassandra is an open-source NoSQL database management system designed to handle large amounts of data across many commodity servers with no single point of failure.

Why Use Apache Cassandra?

Setting Up Apache Cassandra

Java Cassandra Tutorial

Here's a step-by-step guide to getting started with Java Cassandra:

In your Maven or Gradle project, add the following dependencies:

com.datastax.driver
cassandra-driver-core
3.7.0

Create a Java class that connects to your Cassandra cluster:

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.PoolingOptions;
import com.datastax.driver.core.Session;
public class CassandraConnector {
public static Session connectToCassandra(String host, int port) {
PoolingOptions poolingOptions = new PoolingOptions()
.setConnectionsPerHost(HostDistance.LOCAL, 10)
.setMaxRequestsPerConnection(1000);
Cluster cluster = Cluster.builder()
.addContactPoint(host)
.withPoolingOptions(poolingOptions)
.build();
return cluster.connect();
}
}

Create a key space using the Java Cassandra driver:

import com.datastax.driver.core.Session;
import com.datastax.driver.core.query.Builder;
public class CreateTable {
public static void createKeyspace(Session session) {
String query = "CREATE KEYSPACE IF NOT EXISTS mykeyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 3};";
session.execute(query);
}
}

Create a table using the Java Cassandra driver:

import com.datastax.driver.core.Session;
import com.datastax.driver.core.query.Builder;
public class CreateTable {
public static void createTable(Session session) {
String query = "CREATE TABLE IF NOT EXISTS mykeyspace.mytable (id int PRIMARY KEY, name text);";
session.execute(query);
}
}

Insert data into your Cassandra table using the Java Cassandra driver:

import com.datastax.driver.core.Session;
import com.datastax.driver.core.query.INSERT;
public class InsertData {
public static void insertData(Session session) {
StringBuilder queryBuilder = new StringBuilder();
queryBuilder.append("INSERT INTO mykeyspace.mytable (id, name)");
queryBuilder.append(" VALUES (?, ?);");
INSERT insertQuery = session.prepare(queryBuilder.toString());
PreparedStatement prepareStatement = session.prepare(insertQuery);
for (int i = 1; i <= 10; i++) {
BoundStatement boundStatement = prepareStatement
.bind(1, "Item #1")
.bind(2, "Item #2");
session.execute(boundStatement);
}
}
}

Read data from your Cassandra table using the Java Cassandra driver:

import com.datastax.driver.core.Session;
import com.datastax.driver.core.query.QUERY;
public class ReadData {
public static void readData(Session session) {
StringBuilder queryBuilder = new StringBuilder();
queryBuilder.append("SELECT * FROM mykeyspace.mytable WHERE id > ?;");
Query query = session.prepare(queryBuilder.toString());
PreparedStatement prepareStatement = session.prepare(query);
for (int i = 1; i <= 10; i++) {
BoundStatement boundStatement = prepareStatement
.bind(1, "Item #3");
ResultSet results = session.execute(boundStatement);
for (Row row : results) {
System.out.println(row.getString("name"));
}
}
}
}

That's it! You've successfully connected to a Cassandra cluster, created a keyspace and table, inserted data, and read data using the Java Cassandra driver.

Remember to replace host and port with your actual Cassandra node details. Happy coding!