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Parse's MongoDB deployment was definitely not the largest by a longshot. Not even top 10. They had the largest number of databases on a single replica set for

• DivineTraube 10y ago
  Do you have a source for that? It is what the Parse engineers told me, but that kind of information is notoriously hard to corroborate. Any time I asked this question to MongoDB engineers they were evading concrete numbers for deployment sizes.
  • jasondc 10y ago
    Baidu is one: https://www.mongodb.com/blog/post/mongodb-at-baidu-powering-100-apps-across-600-nodes-at-pb-scale https://www.mongodb.com/blog/post/mongodb-at-baidu-powering-... 160 shards = 160 replica sets, and is already larger than Parse.
  • tbrock 10y ago
    I can assure you that you are incorrect. I am the primary source and very aware of Parse's scale. I worked on building a feature that allowed Parse to list that many databases (it had response that does not fit in the document size limit of 16mb -- requiring multiple cursors, command cursors). I am a collaborator on the parse-server project, love the Parse team, respect what they built, and have no incentive to deceive you. I worked at MongoDB for 4 years in various roles, consulting, engineering, etc and saw all sorts of deployments of various shapes and sizes.
    • DivineTraube 10y ago
      I do believe you, but can your share some more hard facts? I've changed the passage to "one of the greatest". As in the disclaimer above the article, I'm mainly presenting assertions by Parse engineers, who were very sure about being the largest MongoDB user in terms of cluster size.