How to learn and master the NEDIS framework and its application in the Java class library
How to learn and master the NEDIS framework and its application in the Java class library
Introduction:
NeDis is a Java Nio client framework based on the Redis protocol, which provides the ability to communicate with the Redis server.In this article, we will introduce how to learn and master the NEDIS framework and show how to apply it in the Java library.
1. Understand the NEDIS framework
1.1 Learn the basic concept of the NEDIS framework.
NeDis is a lightweight, high -performance Redis protocol client, which uses Java NIO to provide protocol interaction.Before starting learning, you need to have a certain understanding of the Redis protocol and be familiar with Java NIO.
1.2 Import the NEDIS framework
You can add the following dependencies in Maven or Gradle to import the NEDIS framework:
<dependency>
<groupId>com.github.shyiko</groupId>
<artifactId>nedis</artifactId>
<version>2.1.0</version>
</dependency>
1.3 View documentation and sample code
The official document of the NEDIS framework provides detailed explanation and example code. You can understand the use of the framework by reading documents.In addition, there are examples code in the GitHub warehouse of Nedis, you can download and run these examples to deepen your understanding.
2. Application of the NEDIS framework
2.1 Connect the Redis server
Before using the NEDIS framework, you first need to build a connection with the Redis server.You can achieve this by creating a NEDISClient object:
NedisClient client = NedisClient.create("localhost", 6379);
2.2 Send Redis command
The Nedis framework uses the Redis protocol to send commands and receive responses.You can send the Redis command with the NEDISCLIENT object and process the response result by the callback function:
client.send(Command.create("SET", "key", "value"), response -> {
String result = response.getString();
System.out.println(result);
});
2.3 Processing other types of response
In addition to string types, Redis also supports other types of data, such as lists, hash tables, etc.You can use different methods to deal with these types of response, such as:
client.send(Command.create("LPUSH", "list", "value1", "value2"), response -> {
List<String> list = response.getList();
System.out.println(list);
});
client.send(Command.create("HSET", "hash", "field", "value"), response -> {
Map<String, String> hash = response.getHash();
System.out.println(hash);
});
2.4 Asynchronous operation and event driver
The NeDis framework is based on Java NiO, and its operation is non -blocking.You can handle the results and events of asynchronous operations by registering an event monitor:
client.send(Command.create("PING"), response -> {
String result = response.getString();
System.out.println(result);
});
client.addListener(new NedisListener() {
@Override
public void onConnected() {
System.out.println("Connected to Redis server");
}
@Override
public void onDisconnected() {
System.out.println("Disconnected from Redis server");
}
});
3. Summary
The NeDis framework is a powerful Java NiO client that provides the ability to communicate with the Redis server.By learning the basic concepts of the NEDIS framework, reading documents and example code, and using the NEDIS framework for Redis operations, you can effectively master the NEDIS framework and apply it to the Java library.
In addition, in order to better understand the internal working principle of the NEDIS framework, we encourage you to read the source code of the framework.This will help you understand the details of the framework in depth and help you customize and extend the framework function when needed.
Reference link: https://github.com/shyiko/netis
