聊聊jesque在redis中的數據結構

序

本文主要介紹一下jesque在redis的存儲結構

示例配置

namespace=demo
listen-queue=demoqueue

啓動時的reids對象

127.0.0.1:6379> keys *
1) "demo:worker:Mars.local:3820-3:JAVA_DYNAMIC_QUEUES,demoqueue:started"
2) "demo:worker:Mars.local:3820-1:JAVA_DYNAMIC_QUEUES,demoqueue:started"
3) "demo:worker:Mars.local:3820-0:JAVA_DYNAMIC_QUEUES,demoqueue:started"
4) "demo:workers"
5) "demo:worker:Mars.local:3820-2:JAVA_DYNAMIC_QUEUES,demoqueue:started"
6) "demo:worker:Mars.local:3820-4:JAVA_DYNAMIC_QUEUES,demoqueue:started"
127.0.0.1:6379> type demo:workers
set
127.0.0.1:6379> smembers demo:workers
1) "Mars.local:3820-4:JAVA_DYNAMIC_QUEUES,demoqueue"
2) "Mars.local:3820-2:JAVA_DYNAMIC_QUEUES,demoqueue"
3) "Mars.local:3820-1:JAVA_DYNAMIC_QUEUES,demoqueue"
4) "Mars.local:3820-0:JAVA_DYNAMIC_QUEUES,demoqueue"
5) "Mars.local:3820-3:JAVA_DYNAMIC_QUEUES,demoqueue"

namespace:workers

set類型的數據接口，存儲該namespace下的workers的名稱

namespace:worker:host:queueType,listen-queue:state

這個是標記每一個namespace的worker的狀態，是個string類型，存儲事件產生時間

127.0.0.1:6379> type demo:worker:Mars.local:3820-3:JAVA_DYNAMIC_QUEUES,demoqueue:started
string
127.0.0.1:6379> get demo:worker:Mars.local:3820-3:JAVA_DYNAMIC_QUEUES,demoqueue:started
"2017-11-18T15:35:24.913+0800"

新增job

127.0.0.1:6379> keys *
1) "demo:worker:Mars.local:3820-3:JAVA_DYNAMIC_QUEUES,demoqueue:started"
2) "demo:queue:demoqueue"
3) "demo:worker:Mars.local:3820-1:JAVA_DYNAMIC_QUEUES,demoqueue:started"
4) "demo:worker:Mars.local:3820-0:JAVA_DYNAMIC_QUEUES,demoqueue:started"
5) "demo:queues"
6) "demo:workers"
7) "demo:worker:Mars.local:3820-2:JAVA_DYNAMIC_QUEUES,demoqueue:started"
8) "demo:worker:Mars.local:3820-4:JAVA_DYNAMIC_QUEUES,demoqueue:started"

能夠發現新增了幾個queue相關的對象 demo:queue:demoqueue這個是個鎖信息

namespace:queues

是一個set結構，存儲隊列信息

127.0.0.1:6379> smembers demo:queues
1) "demoqueue"

處理完job

127.0.0.1:6379> keys *
1) "demo:worker:Mars.local:3820-1:JAVA_DYNAMIC_QUEUES,demoqueue:started"
2) "demo:worker:Mars.local:3820-0:JAVA_DYNAMIC_QUEUES,demoqueue:started"
3) "demo:queues"
4) "demo:stat:processed"
5) "demo:stat:processed:Mars.local:3820-0:JAVA_DYNAMIC_QUEUES,demoqueue"
6) "demo:worker:Mars.local:3820-3:JAVA_DYNAMIC_QUEUES,demoqueue:started"
7) "demo:workers"
8) "demo:worker:Mars.local:3820-4:JAVA_DYNAMIC_QUEUES,demoqueue:started"
9) "demo:worker:Mars.local:3820-2:JAVA_DYNAMIC_QUEUES,demoqueue:started"

能夠發現新增了兩個stat相關的對象

namespace:stat:processed

是string類型，統計處理過的job的數量

127.0.0.1:6379> type demo:stat:processed
string
127.0.0.1:6379> get demo:stat:processed
"1"

namespace:stat:processed:host:queueType,listen-queue

存儲每一個host處理每一個queue的數量

127.0.0.1:6379> type demo:stat:processed:Mars.local:3820-0:JAVA_DYNAMIC_QUEUES,demoqueue
string
127.0.0.1:6379> get demo:stat:processed:Mars.local:3820-0:JAVA_DYNAMIC_QUEUES,demoqueue
"1"

關閉worker的時候

127.0.0.1:6379> keys *
1) "demo:queues"
2) "demo:stat:processed"

就只剩下兩個信息

job執行失敗的時候

127.0.0.1:6379> keys *
 1) "demo:stat:failed"
 2) "demo:failed"
 3) "demo:queues"
 4) "demo:stat:processed"
 5) "demo:worker:Mars.local:3947-2:JAVA_DYNAMIC_QUEUES,demoqueue:started"
 6) "demo:worker:Mars.local:3947-3:JAVA_DYNAMIC_QUEUES,demoqueue:started"
 7) "demo:worker:Mars.local:3947-1:JAVA_DYNAMIC_QUEUES,demoqueue:started"
 8) "demo:worker:Mars.local:3947-4:JAVA_DYNAMIC_QUEUES,demoqueue:started"
 9) "demo:worker:Mars.local:3947-0:JAVA_DYNAMIC_QUEUES,demoqueue:started"
10) "demo:workers"
11) "demo:stat:failed:Mars.local:3947-0:JAVA_DYNAMIC_QUEUES,demoqueue"

能夠發現多了三個failed相關的對象

namespace:failed

是一個list類型

127.0.0.1:6379> type demo:failed
list
127.0.0.1:6379> lrange demo:failed 0 -1
1) "{\"worker\":\"Mars.local:3947-0:JAVA_DYNAMIC_QUEUES,demoqueue\",\"queue\":\"demoqueue\",\"payload\":{\"class\":\"com.example.demo.job.DemoJob\",\"args\":[\"111\",1510991413785],\"vars\":null,\"jobId\":\"c4c0289e-5d13-4bc3-8499-f3e35c5956a6\"},\"backtrace\":[\"\\tat com.example.demo.job.DemoJob.run(DemoJob.java:30)\",\"\\tat cn.codecraft.jesque.component.RedisPooledWorkerImpl.execute(RedisPooledWorkerImpl.java:656)\",\"\\tat cn.codecraft.jesque.component.RedisPooledWorkerImpl.process(RedisPooledWorkerImpl.java:611)\",\"\\tat cn.codecraft.jesque.component.RedisPooledWorkerImpl.poll(RedisPooledWorkerImpl.java:420)\",\"\\tat cn.codecraft.jesque.component.RedisPooledWorkerImpl.run(RedisPooledWorkerImpl.java:171)\",\"\\tat java.lang.Thread.run(Thread.java:745)\"],\"error\":\"demo ex\",\"exception\":\"java.lang.RuntimeException\",\"failed_at\":\"2017-11-18T07:50:33.921+0000\",\"retried_at\":null}"

存儲了具體的job信息及異常

namespace:stat:failed

存儲失敗job的計數

127.0.0.1:6379> type demo:stat:failed
string
127.0.0.1:6379> get demo:stat:failed
"1"

namespace:stat:failed:host:queueType,listen-queue

存儲每一個host每一個queue處理失敗的數量

127.0.0.1:6379> type demo:stat:failed:Mars.local:3947-0:JAVA_DYNAMIC_QUEUES,demoqueue
string
127.0.0.1:6379> get demo:stat:failed:Mars.local:3947-0:JAVA_DYNAMIC_QUEUES,demoqueue
"1"