Java massive data processing problem record

1. When the amount of data that is called across a service interface exceeds a certain amount, the interface becomes unresponsive, forcing the request to be disconnected

Memory overflow may occur during 2.gson and Fastjson serialization and deserialization, Gson fields that are not serialized to NULL by default.

Fastjson-Deserialization generic class: Json.parseobject (Result, new typereference<responsedto<list<item>>> () {});

3. A memory overflow may occur with a large string write file

Java massive data processing problem record