Memory Chronicles: Manage, Trace and Fix Memory Leaks

Talk at Node+JS Interactive 2019

Transcript

1. Memory Chronicles: Manage,
   Trace and Fix Memory Leaks
   Giovanny Gongora
   
   @Gioyik
   

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2. Giovanny
   gio@nodesource.com
   @gioyik
   

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3. © 2019 NodeSourc
   e
   What is this really?
   

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4. © 2019 NodeSourc
   e
   See you at 2pm!
   

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5. Who had a memory issue with
   a Node.js application before?
   

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6. It happens in real life, happens
   in TNT
   

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7. Heap profiler & Timeline
   

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8. When to use them?
   

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9. Workflow for diagnosing
   memory leaks?
   

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10. TST
    

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11. Three Snapshot Technique
    

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12. What do the Shallow and
    Retained Size columns represent?
    

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13. Where should I start digging
    into to discover if I have a leak?
    

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14. Redacted snapshots
    

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15. Core Dumps
    

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16. Create a Core dump
    

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17. --abort-on-uncaught-exception
    

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18. LLDB
    

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19. Llnode
    

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20. Caveats
    

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21. llnode’s coupling to V8
    

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22. Promises (?)
    

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23. Async / Await FTW!
    

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24. Tips for different situations
    

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25. Case #1:
    Server Side Rendering (SSR)
    

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26. Case #2:
    Monitoring tools
    

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27. Case #3
    Close your connections
    

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28. Case #4:
    Look for agnostic serve pages solution
    

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29. Case #5:
    Review you packages
    

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30. Case #6:
    Keep naming you functions
    

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31. Case #6:
    Check how reliable are your 3rd services
    

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32. Crazy … right?
    

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33. Thank you!
    

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