redis INCR command
Translation results：
incr
abbr.increase (value, price, inventory, amount, production, etc.) increase;increasing increase;increased increase;incremental increase
redis INCR commandsyntax
Function: Increase the numerical value stored in key by one.
Syntax: INCR key
Description: If key does not exist, then the value of key will be initialized to 0 first, and then INCR will be executed operate. If the value contains the wrong type, or a value of type string cannot be represented as a number, an error is returned. The value of this operation is limited to 64-bit signed number representation.
Available versions: >= 1.0.0
Time complexity: O(1)
Return: The value of key after executing the INCR command.
redis INCR commandexample
redis> SET page_view 20 OK redis> INCR page_view (integer) 21 redis> GET page_view # 数字值在 Redis 中以字符串的形式保存 "21"