Radis learning Summary

Comparison between redis and memcached.

1. memcached is multithreading, while redis uses a single thread.

2. memcached uses the pre-allocated memory pool. redis uses the on-site memory application method to store data and can configure virtual memory.

3. redis can achieve persistence, master-slave replication, and fault recovery.

4. memcached is a simple key and value, but redis supports many data types.

Redis currently provides five data types: String, list, hash, set, and zset (sorted set)

File concurrency (log processing): the solution is to first put data in the queue, and then start a thread to retrieve data from the queue and then write it to the file.

Redis master-slave replication: one master can have multiple slave instances, and one slave can have multiple slave instances. In this way, a powerful multi-level server cluster architecture is formed.

List <userinfo> List = new list <userinfo> () {New userinfo () {username = "Lisi", userpwd = "111"}, new userinfo () {username = "wangwu", userpwd = "123 "}};

Client. Set <list <userinfo> ("list", list );

List <userinfo> userinfolist = client. Get <list <userinfo> ("list ");

Foreach (userinfo in userinfolist)

{

Console. writeline (userinfo. username );

}