How to use the NEDIS framework in the Java library
Guide to use the NEDIS framework in the Java library
NeDis is a Java framework for interacting with Redis database.Redis is a high -performance memory database that can be used as cache, database and message middleware.NeDis allows developers to communicate with Redis through simple APIs and provide some useful functions, such as connecting pools, transactions and release/subscriptions.
The following is the step of using the NEDIS framework in the Java class library:
1. Import the NEDIS framework
First, you need to add the NEDIS framework to your Java project.You can complete this operation by adding the NEDIS dependency item to your construction tool (such as Maven or Gradle).The following is an example of using Maven:
<dependency>
<groupId>org.sweet.redis</groupId>
<artifactId>nedis</artifactId>
<version>1.0.0</version>
</dependency>
2. Create a redis connection
Before using Nedis, you need to create a Redis connection first.You can use the `Redisconnection` class to implement this.The following is an example of creating a Redis connection:
import org.sweet.redis.RedisConnection;
import org.sweet.redis.RedisConnectionOptions;
public class Example {
public static void main(String[] args) {
RedisConnectionOptions options = new RedisConnectionOptions.Builder()
.host("localhost")
.port(6379)
.build();
RedisConnection connection = new RedisConnection(options);
// Connect to redis
connection.connect();
// ...
// Turn off the connection
connection.disconnect();
}
}
3. Execute the redis command
Once you create a Redis connection, you can use the various methods of the `Redisconnection` class to execute the Redis command.Here are some examples:
-Set the SET command settings key value pair:
connection.sendCommand("SET", "key", "value");
-Sested the value of the GET command to get the value of the key:
String value = connection.sendCommand("GET", "key");
System.out.println(value);
-In use the connection pool to send a get command:
String value = connection.get("key");
System.out.println(value);
-Exical transaction:
The transaction is a set of atomic operations, either successfully executed or all failed.The following is an example of execution of affairs:
connection.multi();
connection.sendCommand("SET", "key1", "value1");
connection.sendCommand("SET", "key2", "value2");
connection.exec();
4. Release/subscription message
When you need to handle message transmission, you can use the release/subscription function of the NEDIS framework.The following is an example of publishing/subscribing messages:
RedisConnection subscriber = new RedisConnection(options);
subscriber.connect();
subscriber.subscribe("channel", (channel, message) -> {
System.out.println("Received message: " + message);
});
You can repeat this process among any subscriber.
Through these simple steps, you can use the NEDIS framework to interact with the Redis database in the Java library.This allows you to use the powerful functions of Redis to process the needs of cache, database and message middleware.I hope this guide can help you start using the NEDIS framework!
