forked from mirror/redis
67 lines
1.0 KiB
Go
67 lines
1.0 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"git.internal/re/redis/v8"
|
|
)
|
|
|
|
func main() {
|
|
ctx := context.Background()
|
|
|
|
rdb := redis.NewClient(&redis.Options{
|
|
Addr: ":6379",
|
|
})
|
|
_ = rdb.FlushDB(ctx).Err()
|
|
|
|
fmt.Printf("# INCR BY\n")
|
|
for _, change := range []int{+1, +5, 0} {
|
|
num, err := incrBy.Run(ctx, rdb, []string{"my_counter"}, change).Int()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Printf("incr by %d: %d\n", change, num)
|
|
}
|
|
|
|
fmt.Printf("\n# SUM\n")
|
|
sum, err := sum.Run(ctx, rdb, []string{"my_sum"}, 1, 2, 3).Int()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
fmt.Printf("sum is: %d\n", sum)
|
|
}
|
|
|
|
var incrBy = redis.NewScript(`
|
|
local key = KEYS[1]
|
|
local change = ARGV[1]
|
|
|
|
local value = redis.call("GET", key)
|
|
if not value then
|
|
value = 0
|
|
end
|
|
|
|
value = value + change
|
|
redis.call("SET", key, value)
|
|
|
|
return value
|
|
`)
|
|
|
|
var sum = redis.NewScript(`
|
|
local key = KEYS[1]
|
|
|
|
local sum = redis.call("GET", key)
|
|
if not sum then
|
|
sum = 0
|
|
end
|
|
|
|
local num_arg = #ARGV
|
|
for i = 1, num_arg do
|
|
sum = sum + ARGV[i]
|
|
end
|
|
|
|
redis.call("SET", key, sum)
|
|
|
|
return sum
|
|
`)
|