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Java serialization and deserialization Reprinted in https://www.cnblogs.com/9dragon/p/10901448.html 1, Meaning, meaning and usage scenario of serialization Serialization: writing objects to IO streams Deserialization: recovering objects from IO streams Meaning: the serialization mechanism allows the Java objects that realize serialization to ...

catalogue Redis redis application scenario Install compile & & start redis storage structure Five data structures of Redis string string basic command string storage structure Application of string data type in redis list list basic command list storage structure list application hsah Basic command storage struct ...

etcd Server startup overview The startup of etcd server includes two parts: The main process of etcdServer, which directly or indirectly includes many core components such as raftNode, WAL and snapshot, can be understood as a container; The other is raftNode, which encapsulates the implementation of the internal Raft protocol and exposes ...

When learning becomes a habit, knowledge becomes common sense. Thank you for your attention, likes, collections and comments.The new video and articles will be sent to WeChat official account for the first time. Li YongningThe article has been included in github warehouse liyongning/blog , welcome to Watch and Star.Special instructionsDue to th ...

When learning becomes a habit, knowledge becomes common sense. Thank you for your attention, likes, collections and comments. The new video and articles will be sent to WeChat official account for the first time. Li Yongning The article has been included in github warehouse liyongning/blog , welcome to Watch and Star. Special instructions D ...

catalogue 1, Why learn node operations 2, Node overview 3, Node level 3.1 parent node 3.2 child nodes 3.2.1 case exercise - drop down menu 3.3 brother nodes 4, Create and} add nodes 4.1 case exercise - simple message posting case 5, Delete node 5.1 case exercise - delete message Vi. replication node (clone node) 1, Why learn nod ...

example Let's start with an example Picture reader Design a program that can read different types of picture formats. For each picture format, a picture reader is required. For example, GIF reader is used to read GIF pictures and JPG reader is used to read JPG pictures. The flexibility and scalability of the system should be fully cons ...

PostgreSQL PostGIS - getting started example introduce Spatial data is an important kind of data. The software used in our daily life, such as map navigation, taxi software, restaurant recommendation and takeout express, are closely related to spatial data. Spatial data usually has complex structure and large amount of data. For the analysis ...

catalogue Initialize Spark streaming program 1, SparkSql parameter tuning settings 1. Set session time zone 2. Sets the maximum number of bytes a single partition can hold when reading a file 3. Set the threshold for merging small files 4. Sets the number of partitions to use when shuffling data with join or aggregate 5. Set the maximum ...

Python WeChat Subscription Applet Course Video https://edu.csdn.net/course/detail/36074 Python Actual Quantitative Transaction Finance System https://edu.csdn.net/course/detail/35475 1. Preface We are implementing distributed locks using Redis, starting with SET resource-name anystring NX EX max-lock-time, and releasing locks using Lua scr ...