Explore the technical principles of the Kryo framework in the Java library

Kryo is a framework for serialization and deepertization objects in the Java library.By providing high -performance and efficient serialization methods, it provides application developers with a fast and simple way to handle the persistence of objects.This article will explore the technical principles of the Kryo framework in the Java class library and provide some Java code examples to illustrate its usage. 1. Introduction to Kryo framework Kryo is a lightweight Java object serialized library developed by ESotericsoftware.Compared with the serialization mechanism that comes with Java, Kryo provides higher performance and smaller serialized volume.It focuses on speed and simplicity, and can be suitable for any Java application. 2. Kryo's technical principle Kryo's serialization and deepening serialization are achieved by converting the Java object into byte flow.It uses a reflex mechanism similar to Java, converts the fields and attributes of the object to byte flow, and stores the corresponding type information.When the object is required, Kryo will be based on byte flow and type information reconstruction object. Kryo's technical principles mainly include the following aspects: 1. Registration information: Kryo needs to register in advance before serialization and desertileization.In this way, Kryo can know how to correctly serialize and deefize these classes.By calling the `register (Class)" method, you can register the class to be processed into the Kryo instance. For example: Kryo kryo = new Kryo(); kryo.register(User.class); 2. Serialization and derivativeization: Once the class is registered, Kryo can serialize the Java object into byte flow, and can be restored to the Java object according to the byte flow.The serialization can be implemented by the method of `` `` OutputStream, Object), and the derivatives can be implemented by `ReadObject (InputStream, Class). For example: User user = new User("John", 25); OutputStream outputStream = new FileOutputStream("user.bin"); kryo.writeObject(outputStream, user); outputStream.close(); InputStream inputStream = new FileInputStream("user.bin"); User deserializedUser = kryo.readObject(inputStream, User.class); inputStream.close(); 3. Support advanced characteristics: The KRYO framework provides some advanced features, such as reusing reuse and custom serialization.Reuse reuse can be shared between objects to reduce serialized volume.Custom serialization can process the serialization and derivativeization of specific types by implementing the `Serializer` interface and register to the KRYO instance. For example: public class CustomSerializer extends Serializer<CustomType> { @Override public void write(Kryo kryo, Output output, CustomType object) { // Implement the serialized logic of custom type } @Override public CustomType read(Kryo kryo, Input input, Class<CustomType> type) { // Realize the logic of the customized type } } Kryo kryo = new Kryo(); kryo.register(CustomType.class, new CustomSerializer()); 3. Summary The KRYO framework provides high -performance and efficient serialization methods, making the serialization and back -sequentialization of the objects in the Java class library faster and simpler.This article explores the technical principles of the Kryo framework in the Java class library, and shows its basic usage through the example code.Using Kryo can effectively handle the persistence needs of the Java object and improve the performance and efficiency of the application.