BYOMQ: Build Your Own Message Queue

Transcript

1. BYOMQ: Why We [re]Built IronMQ Reed Allman @rdallman10

2. Making [another!] Case for NIH Reed Allman @rdallman10

3. Beating A Dead Horse [again!] Reed Allman @rdallman10

4. There

5. Are

6. Too

7. Many

8. Options

9. Me Showing .gifs for 30 Minutes Reed Allman @rdallman10

10. None

11. NIH: Not Invented Here Syndrome A quick refresher: ...the tendency

    towards reinventing the wheel (reimplementing something that is already available) based on the belief that in-house developments are inherently better suited, more secure, more controlled, quicker to develop, and incur lower overall cost (including maintenance cost) than using existing implementations.

12. Proof by Contradiction

13. Throw this at ${USE_CASE}

14. Out of the Box • Massive scale on commodity hardware

    in hours of easy set up • Battle tested, many bugs worked out, lots of docs, tools, guides, etc. • Operate JVM, hard not to code on JVM • Any and all problems associated with any of the boxes or how they fit together • And these are open source! Many boxes are not and suffer vendor lock-in • At mercy of those who understand it / time for fixing bugs, making improvements

15. Could you do better?

16. Different people come from different backgrounds and, based on that,

    find different tools useful. Ultimately you need to use the tools that let you get your job done most effectively, however that is defined in your particular case. - Russ Cox Go

17. If it's a core business function -- do it yourself,

    no matter what. - Joel Spolsky Excel

18. I felt that my team, which was supposed to be

    made up of distributed systems engineers, was really acting more as distributed system plumbers. - Jay Kreps Kafka
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20. Pain meow or later?

21. To the Queues!

22. Our Requirements: • Easy to run (single binary ideal) in

    any environment & not hosted • Persisted, consistent and performant • Highly available -- fast recovery, no data loss, minimal downtime • Horizontally scalable • Timing based • FIFO • >= 1 time delivery • Multi-Tenant capable+ • Preferably built in Go, HTTP interface

23. ...Scalable, Low-Latency, Persistent MQ for Job Processing

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26. What, briefly • Single Go binary per server • RocksDB

    embedded to store all metadata and messages • Built the distributed database - viewstamped replication, multi-master, gossip membership - scales across queues across nodes, auto-balanced • Linear scaling factor of .98 • Recovery time < 300ms • Simple HTTP interface, stupidly simple clients • Enqueue / Dequeue avg latency < 10ms for < 4KB messages
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28. boom

29. Results

30. Full understanding and control makes for quick fixes, easy to

    add features

31. Don’t have to build a daemon to add features, can

    bake everything in

32. Takes a long time to get to stable

33. Make all your own tools, plumb any data you want

    out

34. Build exactly what you need, optimized for what you are

    doing

35. Use the language(s) you know and love

36. My attempt to say profound shit: Be a builder, not

    a plumber.

37. Questions?