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How Different are MongoDB Drivers

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How many drivers for MongoDB are there? Which one is the best? How do they differ from one another? We are going to explore this and other questions with some code examples across a great deal …

How many drivers for MongoDB are there? Which one is the best? How do they differ from one another? We are going to explore this and other questions with some code examples across a great deal languages

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  • 1. How different are MongoDB Drivers? SA, MongoDB Norberto Leite #mongobe
  • 2. { "name":"Norberto Leite", "role":"Solutions Architect", "company":"MongoDB", "address": ["Barcelona,Spain”,”Brussels,Belgium”] "contact": "norberto@mongodb.com", "likes": { "beer":"Superbock", "software": ["Development","python", "go","databases"], "football":"FC Porto" } } Hi There!
  • 3. Agenda •  MongoDB Drivers •  Community vs Official Supported •  General Considerations •  Examples •  Meta Driver Project
  • 4. MongoDB Drivers
  • 5. What’s a Driver? •  Native Language Library •  API that exposes methods to operate w/ MongoDB •  Serialization and Deserialization of native objects/ structures into BSON format –  http://bsonspec.org •  Handles the communication and pooling with server
  • 6. struct MsgHeader { int32 messageLength; // total message size, including this int32 requestID; // identifier for this message int32 responseTo; // requestID from the original request // (used in reponses from db) int32 opCode; // request type - see table below } Driver Messages
  • 7. struct OP_INSERT { MsgHeader header; // standard message header int32 flags; // bit vector - see below cstring fullCollectionName; // "dbname.collectionname" document* documents; // one or more documents to insert into the collection } Insert Message
  • 8. struct OP_QUERY { MsgHeader header; // standard message header int32 flags; // bit vector of query options. See below for det cstring fullCollectionName ; // "dbname.collectionname" int32 numberToSkip; // number of documents to skip int32 numberToReturn; // number of documents to return // in the first OP_REPLY batch document query; // query object. See below for details. [ document returnFieldsSelector; ] // Optional. Selector indicating the fiel // to return. See below for details. } Query Message
  • 9. How many drivers ? •  A few
  • 10. How many drivers? •  13 officially supported drivers –  Python –  Java –  C / C++ / C# –  PHP –  Node.js –  Perl –  Ruby –  Scala –  … http://docs.mongodb.org/ecosystem/drivers/
  • 11. How many drivers? •  Community Supported –  Matlab –  R –  Go –  Clojure –  Dart –  Erlang –  Prolog –  … http://docs.mongodb.org/ecosystem/drivers/community-supported-drivers/
  • 12. Community vs Official Supported
  • 13. Don’t take the RED PILL!
  • 14. Things to consider •  Official driver means: –  We have dedicated resources to work on the driver –  Constant delivery and updated with server version –  Support includes fixes for drivers •  Some community drivers are also maintained by MongoDB engineers –  mongoengine –  motor –  …
  • 15. But most important Use the best tool for the problem!
  • 16. Language Ecosystem
  • 17. Python •  Official Driver –  pymongo •  Frameworks | ODMs –  mongoengine –  minimongo –  Manga •  Alternative Drivers –  Asynchronous •  Motor •  TxMongo
  • 18. > pip install pymongo //or > easy_install pymongo //using ipython > ipython >> from pymongo import MongoClient >> mc = MongoClient() Python
  • 19. Node.js •  Official Driver –  http://mongodb.github.io/node-mongodb-native/ •  ODM –  Mongose •  http://mongoosejs.com/ •  Others –  Mongoskin –  Mongolia http://docs.mongodb.org/ecosystem/drivers/node-js/
  • 20. > node >> var MongoClient = require("mongodb").MongoClient >> MongoClient.connect( "mongodb://nair.local:27017", function(err, db){ if(!err) {console.log("we are connected");} }); >> var col = db.collection("sample"); Node.js
  • 21. Java •  Official Driver –  http://api.mongodb.org/java/current/index.html •  Multiple Frameworks –  Morphya –  DataNucleus JPA/JDO –  Jongo •  JVM Languages –  Scala –  Clojure –  Groovy
  • 22. Clojure
  • 23. (ns my.service.server (:require [monger.core :as mg]) (:import [com.mongodb MongoOptions ServerAddress])) ;; localhost, default port (mg/connect!) ;; set default database using set-db (mg/set-db! (mg/get-db "monger-test")) Clojure
  • 24. Go •  Not officially supported driver! •  mgo Library –  http://labix.org/mgo –  Really cool! –  We use it internally for some projects •  Others –  gomongo –  go-mongo
  • 25. Let’s get some code Running!
  • 26. MongoDB Meta Driver Project
  • 27. Meta Driver •  http://docs.mongodb.org/meta-driver/latest/ •  Help new drivers to be built by the community •  Basic structure and conventions documentation •  Beta Project–Under Development
  • 28. Obrigado! norberto@mongodb.com Norberto Leite @nleite

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