Second, Redis command line and configuration file redis.windows.conf

One, the Redis sends the command two kinds of ways

Redis-cli-h localhost-p 6379
Redis-cli Ping return Pong proven normal

Second, the command return value

1, status reply, such as ping command

2, error reply, such as random input arbitrary command

3, Integer replies, such as some commands will return an integer, incr (Increase), decr (Decrease), dbsize (returns the current number of keys)

4, string reply, such as Get command, wrapped in double quotation marks, when the requested key does not exist will get an empty result, return (nil)

5, multi-line string reply, such as keys *, return so the name of the key

Three, multiple databases

Redis is a dictionary-structured storage server, and a Redis instance provides multiple dictionaries where the client can specify which dictionary to store the data on. Each dictionary can be understood as a separate database.

Each database is named after an incremental number starting at 0, and Redis supports 16 databases by default.

Different points of Redis to other relational databases:

1, custom names are not supported. Only use (0-15)
2. Setting different access permissions for each database is not supported.
3, multiple databases are not completely isolated, such as flushall can empty an instance of all the libraries.

How to switch databases:

Using the Select <dbid> command

Iv. Modifying the number of databases supported by Redis by default

The default number of Redis databases can be modified in the redis.windows.conf file under the installation directory.

Second, Redis command line and configuration file redis.windows.conf