15 1.5 Groups 23 1.6 Iterable 25 1.7 Chains 27 1.8 Schedules 28 1.9 Cluster 32 1.10 Monitor 34 1.11 Admin pages 37 1.12 Architecture 40 1.13 Examples 42 Python Module Index Django Q and chains • Django Admin integration • PaaS compatible with multiple instances • Multi cluster monitor • Redis, Disque, IronMQ, SQS, MongoDB or ORM • Rollbar support Django Q is tested with: Python Blessed This feature-filled fork of Erik Rose’s blessings project provides the terminal layout of the monitor. ## Optional • Redis-py client by Andy McCurdy is used to interface with both the Redis and Disque

Scoped Locking ■ Strategized Locking ■ Thread-Safe Interface ■ Guarded Suspension Active Object Monitor Object Reactor ## Concurrency Patterns ## Synchronization Patterns Concurrent Architecture ## Object ## Dealing with Mutation ■ Scoped Locking ■ Strategized Locking ■ Thread-Safe Interface Monitor Object ■ Guarded Suspension Reactor ## Copied Value There is no need to synchronize when a thread Storage Active Object ■ Future ## Dealing with Mutation ■ Scoped Locking ■ Strategized Locking Monitor Object ■ Thread-Safe Interface ■ Guarded Suspension Reactor ## Scoped Locking ## Scoped Locking

description) values(1, 'keyboard'); insert into product(pid, description) values(2, 'monitor'); insert into orders(oid, cid, mname, pid, price) values(1, 1, 'monoprice', 1, 10); vdemo=""> ## V itess VReplication Demo ## product product 0 pid description 1 keyboard 2 monitor Samples ▼ Query ## customer ## customer -80 cid name balance 1 sougou 10 ## orders -80 pid description 1 keyboard 2 monitor ## Samples ▼ ## select * from product pid 1 ## result description 2 keyboard cid ## customer ## customer -80 monitor 1 name balance sougou 10 ##

方案实战 #### 6.5.1 实战环境介绍 实战环境服务器列表： |服务器|主机名|ip 地址|Serverid|系统|Mysql| |---|---|---|---|---|---| |Monitor|Mon|10.1.1.111|--|Centos 5.5 64bit|--| |Master1|db1|10.1.1.113|1|Centos 5.5 64bit|5.1.63| |Master2|db2|10 中创建除复制帐号之外的另外两个帐号，首先来介绍 monitor user 帐号，这个帐号是 monitor 服务器用来对 mysql 服务器做健康检查的，其次就是 agent user，这个帐号是 mmm agent(mmm 代理)用来变成只读模式和同步 master 等，下面是创建这两个帐号的语句： GRANT REPLICATION CLIENT ON *.* TO 'mmm_monitor'@'10 ;10.1.1.%' IDENTIFIED BY 'monitor_password'; GRANT SUPER, REPLICATION CLIENT, PROCESS ON *.* TO 'mmm_agent'@'10.1.1.%' IDENTIFIED BY 'agent_password'; flush privileges;

and chains • Django Admin integration • PaaS compatible with multiple instances • Multi cluster monitor • Redis, Disque, IronMQ, SQS, MongoDB or ORM • Python 2 and 3 Django Q is tested with: Python • Multiple Clusters • Using a Procfile • Process managers • Reference • Monitor • Legend o Info o Status o Reference Admin o Successful tasks o Failed tasks o Scheduled tasks o Queued tasks Architecture o Signed Tasks o Broker o Pusher o Worker o Monitor o Sentinel o Timeouts o Scheduler o Stop procedure Examples o Emails o Signals o

and chains • Django Admin integration • PaaS compatible with multiple instances • Multi cluster monitor • Redis, Disque, IronMQ, SQS, MongoDB or ORM • Rollbar support Django Q is tested with: Python • Multiple Clusters • Using a Procfile • Process managers • Reference • Monitor o Legend o Info o Status o Reference • Admin • Successful tasks • Failed tasks tasks • Architecture • Signed Tasks • Broker • Pusher • Worker • Monitor • Sentinel • Timeouts • Scheduler • Stop procedure • Examples • Emails

and chains • Django Admin integration • PaaS compatible with multiple instances • Multi cluster monitor • Redis, Disque, IronMQ, SQS, MongoDB or ORM • Rollbar support Django Q is tested with: Python • Multiple Clusters • Using a Procfile • Process managers • Reference • Monitor o Legend o Info o Status o Reference • Admin • Successful tasks • Failed tasks tasks • Architecture • Signed Tasks • Broker • Pusher • Worker • Monitor • Sentinel • Timeouts • Scheduler • Stop procedure • Examples • Emails

and chains • Django Admin integration • PaaS compatible with multiple instances • Multi cluster monitor • Redis, Disque, IronMQ, SQS, MongoDB or ORM • Rollbar support Django Q is tested with: Python • Multiple Clusters • Using a Procfile • Process managers • Reference • Monitor o Legend o Info o Status o Reference • Admin • Successful tasks • Failed tasks tasks • Architecture • Signed Tasks • Broker • Pusher • Worker • Monitor • Sentinel • Timeouts • Scheduler • Stop procedure • Examples • Emails

and groups • Django Admin integration • PaaS compatible with multiple instances • Multi cluster monitor • Redis, Disque, IronMQ, SQS, MongoDB or ORM • Python 2 and 3 Django Q is tested with: Python Clusters • Using a Procfile • Process managers • Architecture • Reference • Monitor • Legend • Info • Status • Reference • Admin Successful tasks Failed tasks com/jquast/blessed] This feature-filled fork of Erik Rose’s blessings project provides the terminal layout of the monitor. ## Optional - Redis-py. [https://github.com/andymccurdy/redis-py] client by Andy McCurdy is used

1.2 Configuration 6 1.3 Brokers 12 1.4 Tasks 15 1.5 Schedules 23 1.6 Cluster 27 1.7 Monitor 32 1.8 Admin pages 35 1.9 Examples 37 Python Module Index 43 Django Q is a native Django task and groups • Django Admin integration • PaaS compatible with multiple instances • Multi cluster monitor • Redis, Disque, IronMQ, SQS, MongoDB or ORM • Python 2 and 3 Django Q is tested with: Python Blessed This feature-filled fork of Erik Rose’s blessings project provides the terminal layout of the monitor. ## Optional • Redis-py client by Andy McCurdy is used to interface with both the Redis and Disque