golang - redis basic introduction

redis (remote-dictionary-system) that is remote dictionary server, the database is NoSQL:

• Suitable for caching and persistence;
• Free open-source, high-performance distributed-memory database;

redis to install and use:

• Download Redis-x64-3.2.100.zip, then you can extract;
• Double-click to start the redis redis-server.exe server;

redis five data types:

• String (String), hash (Hash), list (List), the set (Set), ordered collection (zset);

After redis installed, the default database there are 16 initial default library using a No. 0, No. 0-15, double-redis-cli.exe Open Client:

• Key-val tian_jia (set)
  set the customary Hello key1
• Get the current database of all Keys
  Keys *
• Obtaining a value corresponding key
  get key1
• Switch databases
  select 1
• To view the current key-val number of databases
  dbsize
• Clear the current database kay-val and clear all database-Val Key
  flushdb
  flushall

String:

It is redis basic type, a key corresponding to a value, e.g. str1 = "hello";

binary string type is safe, in addition to ordinary strings, pictures and other data may be stored;

The maximum value is redis string 512M;

Deletions search string change:

• Increase: set sddress beijing;
• Find: get address;
• Delete: del address;
• Modify: set address nanjing;
• Set the timeout, the character automatically destroyed after 10s: setex mss01 10 hello, you;
• A plurality of one-time key-val: mset name gong age 20;
• Obtaining a plurality of one-time key-val: mget name age;

Hash:

Is a collection of key-value pair, the type of field is a string value and a mapping table, hash is particularly suited for storing objects;

Hash additions and deletions to change search:

• Add a hash: hset user1 name gong; hset user1 age 20;
• Obtain a hash: hget user1 name; hget user1 age;
• Get all the information: hgetall user;
• To delete a value: hdel user1 age;
• Adding a plurality of hash values: hmset user2 name bob age 22;
• Get the value: hmget user2 name age;
• Statistics Hash a number of elements: hlen user2;
• Determine whether there is a field: hexists user2 name;

List:

List is a simple list of strings, sort and insertion order can be inserted in the list of elements and the first end of the list;

The nature of the list is a linked list, a list of the elements are ordered, it may be repeated;

The list of additions and deletions to change search:

• 增加: lpush name bob tom jack; rpush address beijing wuhan shanghai;
• Find: lrange name 0 -1;
• Pop: lpop name; rpop name;
• Delete: del name;
• Index-index data acquisition: lindex name 1;
• List Length: llen name;

set:

Set unordered collection of type string, the bottom is the HashTable;

Set also hold a lot of string elements, unordered string element, and the different elements of the duplicate values;

A collection of additions and deletions to change search:

• Increase: sadd name gong li tan;
• All inquiries: smembers name;
• The existence of a single query: sismember name gong;
• Delete: srem name gong;