Mongo db at_customink


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Presented at MongoDC in June, 2011. This talk describes how we use MongoDB at CustomInk, some challenges we faced introducing the technology, and some lessons learned.

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  • Tempfile maintains deleted lists of space within the datafiles when objects or collections are deleted. This space is reused but never freed to the operating system.
  • Mongo db at_customink

    1. 1. @<br />@nathenharvey<br />Nathen Harvey<br />
    2. 2. Hello!<br />Nathen Harvey<br />Web Operations at CustomInk<br /><br />@nathenharvey<br />Organize MongoDCMeetups<br />See you there next month!<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    3. 3. Thanks for attending<br />In the other track<br />Eliot Horowitz, CTO & Co-Founder, 10gen<br />Schema Design at Scale<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    4. 4. CustomInk<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    5. 5. CustomInk<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    6. 6. CustomInk<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    7. 7. CustomInk Customers<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    8. 8. CustomInk Customers<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    9. 9. CustomInk Customers<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    10. 10. CustomInk Customers<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    11. 11. Customer Reviews<br />Nathen Harvey<br />Nathen Harvey<br />
    12. 12. CustomInk Technology<br />Divide our technology into two classes:<br />ECommerce – pre-checkout and shopping cart<br />Operations Technology – post-check-out, fulfillment, etc.<br />Ruby on Rails<br />With some legacy Java<br />Approximately 30 different applications running in production<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    13. 13. CustomInk Databases<br />Primarily Oracle<br />Was the “right” choice 11 years ago when the company was started<br />No longer a good solution for us<br />MySQL<br />Percona Server with XtraDB<br />MongoDB<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    14. 14. MongoDB<br />Champions<br />Easy to set-up and configure<br />“Greenfield” projects with loose schema definitions<br />Makes development easier and developers happy<br />Limited amount of time between releases<br />Challenges<br />No prior experience with running production<br />Limited amount of time between releases<br />Unproven solution<br />Nathen Harvey<br />Nathen Harvey<br />
    15. 15. Problem<br />Complex Production Environments<br />OrchestratedServices<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    16. 16. Why Mongo?<br />Introduces company to MongoDB<br />Easily to modify document structure<br />Lightweight development<br />Easy to install and deploy<br />Capped Collections<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    17. 17. Central Logger<br />Subclasses Buffered Logger<br />It’s a gem loaded into Rails applications as a Railtie<br />Captures useful metadata<br />Use the MongoDB Ruby Driver<br /><br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    18. 18. Central Logger<br />
    19. 19. Record Structure<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    20. 20. Log Viewer<br />
    21. 21. Product Catalog<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    22. 22. Why Mongo?<br />Frequently changing requirements<br />GridFS<br />Wide variety of products with varied characteristics<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    23. 23. Case for Document-based Schema<br />@nathenharvey<br />Nathen Harvey<br />
    24. 24. Application Architecture<br />Rails application for managing the product catalog<br />Writes to MongoDB as it’s database<br />Utilizes GridFS for storing files<br />Uses Mongoid as the ODM<br />@nathenharvey<br />Nathen Harvey<br />
    25. 25. Implementation Flow<br />ECommerce<br />Application<br />Catalog<br />Application<br />MongoDB<br />Oracle<br />@nathenharvey<br />Nathen Harvey<br />
    26. 26. Next Steps<br />Continue to adopt MongoDB in the Operations Technology applications<br />Begin using MongoDB with ECommerce applications<br />Reporting artwork usage<br />Capturing JavaScript logs<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    27. 27. Automated Deployment<br />Chef is an open source systems integration framework built to bring the benefits of configuration management to your entire infrastructure.<br />We use Chef to manage our infrastructure and deploy MongoDB<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    28. 28. MongoDB Cookbook<br />Use Vagrant and VirtualBox as the development environment for our Cookbooks<br />Cookbook shared on Github and, soon, OpsCode Community Site.<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    29. 29. Monitoring Production<br /><br />
    30. 30. Monitoring Production<br />Monit<br />
    31. 31. Lessons Learned<br />Capped Collections<br />Testing replica set failover<br />Schema free != design free<br />JSON in the DB, JQuery in the browser == happy developers<br />mongo_import could not handle carriage returns in CSV files<br />Unserializable data types<br />Data transformations on a large dataset still painful<br />Unless you’re sharding, map reduce probably slower and more complex than what you’re used to<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    32. 32. MongoDCMeetup<br />Join fellow MongoDB enthusiasts for a monthly meetup<br />Meetings are held at CustomInk in McLean, VA<br /><br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />
    33. 33. Thank You!<br />Nathen Harvey<br />Web Operations at CustomInk<br /><br />@nathenharvey<br />Organize MongoDCMeetups<br />See you there next month!<br />@nathenharvey<br />Nathen Harvey<br />@nathenharvey<br />Nathen Harvey<br />