Q4M - a high-performance message queue for MySQL

Q4M a high-performance message queue for MySQL Cybozu Labs, Inc. Kazuho Oku

[object Object],[object Object]

What is a Message Queue? ,[object Object],[object Object],[object Object],[object Object]

Message Queue (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Minimal Configuration of a MQ ( 最小構成 ) ,[object Object],[object Object],Sender Receiver Queue

MQ and Relays ,[object Object],[object Object],[object Object],[object Object],Sender Receiver Relay Queue Queue

Merits of Message Relays ( リレーの意義 ) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Message Brokers ,[object Object],[object Object],[object Object],[object Object],[object Object]

Q4M ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File Format ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Row Header ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Data Consistency ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Data Consistency (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Row IDs ,[object Object],[object Object],[object Object],[object Object],[object Object]

Restritions in SQL of Q4M ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Why no Indexes Support? ,[object Object],[object Object]

Why no Indexes Support? ,[object Object],[object Object],[object Object],[object Object]

Sending a Message ,[object Object]

Receiving a Message ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

OWNER Mode and NON-OWNER Mode (cont.) ,[object Object],[object Object],[object Object],[object Object]

Function for Entering OWNER Mode ,[object Object],[object Object],[object Object],[object Object]

queue_wait ,[object Object],[object Object],[object Object]

queue_wait(tbl_cond) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

queue_wait(tbl_cond) (cont.) ,[object Object]

queue_wait(tbl_cond,[tbl_cond…,timeout]) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Functions for Exiting OWNER Mode ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Receiving a Message (revisited) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Connecting Distant Servers ,[object Object],[object Object],Content Analysis Service Pathtraq DB MySQL conn. over SSL,gzip Queue Queue

User Notifications ,[object Object],[object Object],DB App. Logic SMTP Agent IM Agent Queue(s)

Asynchronous Updates ,[object Object],[object Object],DB App. Logic DB Queue

Scheduling Web Crawlers ,[object Object],[object Object],URL DB Spiders Re- scheduler Store Result Read URL If failed to fetch, store URL in retry queue Request Queue Retry Queue

Current Limitations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Future of Q4M ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Configuration Options of Q4M ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Q4M - a high-performance message queue for MySQL

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Q4M - a high-performance message queue for MySQL