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Update ch6-02-lock.md

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如果redis没有"counter"这个key,  getResp.Int64()会返回redis.Nil导致"counter"key无法设置
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Himer 2019-04-23 20:27:55 +08:00 committed by GitHub
parent 875009fff8
commit de5f28ec56
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ch6-cloud/ch6-02-lock.md
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@ -176,7 +176,7 @@ func incr() {
// counter ++ // counter ++
getResp := client.Get(counterKey) getResp := client.Get(counterKey)
cntValue, err := getResp.Int64() cntValue, err := getResp.Int64()
if err == nil { if err == nil || err == redis.Nil {
cntValue++ cntValue++
resp := client.Set(counterKey, cntValue, 0) resp := client.Set(counterKey, cntValue, 0)
_, err := resp.Result() _, err := resp.Result()