Detailed analysis of the technical principles of the Kryo framework in the Java class library

Kryo is an efficient Java serialization framework that is used to convert objects into byte flow in order to transmit or store on the network.It has excellent performance when processing a large amount of data, and compared to Java's default sequentialization mechanism, the serialization and derivativeization are faster.This article will analyze the technical principles of the Kryo framework in detail and provide some Java code examples. Kryo's technical principles mainly include the following points: 1. Registration class: KRYO needs to know the classification and desequentization class in advance.Before using Kryo, we need to register a class that may be serialized.In this way, Kryo can create a unique identifier for each class, and use this identifier to distinguish the class when serialization and dependentization. For example, we can use the following code to register a class: Kryo kryo = new Kryo(); kryo.register(Person.class); 2. Treatment reference: In the process of serialization, if multiple objects reference the same object, Kryo will ensure that only one sequence is serialized, and only one identifier is written when the object is subsequently referenced.This can reduce the number of bytes that serialize and improve efficiency. 3. Processing cycle reference: Kryo can also process cycle reference, that is, a object references itself.It uses a stack to track objects that are undergoing serialization. When an object already exists in the stack, Kryo will directly write a identifier.In this way, not only can the cycle reference correctly, it can also avoid infinite recursive serialization. 4. Support customized serialization: KRYO framework supports custom serialization and device.For some special classes, a custom serializer can be achieved to better control the serialization and derivativeization process of the object.This is usually used for performance optimization or processing special data structures. Below is an example of serialization and dependentization using KRYO: public class KryoSerializer { public byte[] serialize(Object object) { Kryo kryo = new Kryo(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); Output output = new Output(baos); kryo.writeObject(output, object); output.close(); return baos.toByteArray(); } public Object deserialize(byte[] bytes, Class<?> clazz) { Kryo kryo = new Kryo(); ByteArrayInputStream bais = new ByteArrayInputStream(bytes); Input input = new Input(bais); return kryo.readObject(input, clazz); } } In the above example, we created a Kryoserializer class that contains a Serialize () method and a deserialize () method.The serviceize () method is used to convert the object to byte array, and the deserialize () method is used to restore the byte array as the object. The code that uses Kryo for serialization and derivativeization is very concise.We only need to create a Kryo object, and then write and read the objects with Output and INPUT objects.For complex object diagrams, Kryo will automatically process the reference and cycle reference situation without extra code. In summary, the Kryo framework realizes efficient Java object serialization and derivatives by registering classes, processing references and cyclic references, and supporting custom serialization.It has excellent performance when processing a large amount of data, and compared to Java's default serialization mechanism, it is faster and less bytes.Through this framework, we can more conveniently perform the network transmission and storage of the object.