MongoDb In Action
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The document discusses MongoDB, including that it uses document-oriented databases with JSON-style documents, has dynamic queries, supports replication and sharding, uses GridFS for file storage, and offers high performance. It provides examples of how to perform queries, updates, deletes and other operations in MongoDB as compared to MySQL.
![Dynamic querysAdvancedMySQL:SELECT * FROM user WHERE `age` IN (25, 35,45)Mongo: db.user.find({'age' : {$in : [25, 35, 45]}})MySQL: SELECT * FROM user limit 10,20Mongo: db.user.find().skip(10).limit(20)](https://image.slidesharecdn.com/mongodbinaction-100122230824-phpapp01/85/MongoDb-In-Action-19-320.jpg)
MongoDb In Action
- 2. I will talk ….About MongoDB
- 4. Replication
- 5. Sharding
- 6. GridFS
- 7. Performance
- 10. Schema-free
- 11. Written in C++ for high performance
- 12. Scalable
- 13. MapReduce
- 14. Many supported platforms & languagesDynamic querysSelectMySQL:SELECT * FROM userMongo: db.user.find()MySQL:SELECT * FROM user WHERE name = 'foobar'Mongo: db.user.find({'name' : 'foobar'})
- 15. Dynamic querysInsertMySQL:INSERT INOT user (`name`, `age`) values ('foobar',25)Mongo: db.user.insert({'name' : 'foobar', 'age' : 25})if you want add a column `email` on MySQL,you must :ALTER TABLE user….But in Mongo,you can just: db.user.insert({'name' : 'foobar', 'age' : 25, 'email' : 'foo@bar.com'})
- 16. Dynamic querysDeleteMySQL:DELETE * FROM userMongo: db.user.remove({})MySQL:DELETE FROM user WHERE age < 30Mongo: db.user.remove({'age' : {$lt : 30}})$gt : > ; $gte : >= ; $lt : < ; $lte : <= ; $ne : !=
- 17. Dynamic querysUpdateMySQL:UPDATE user SET `age` = 36 WHERE `name` = 'foobar'Mongo: db.user.update({'name' : 'foobar'}, {$set : {'age' : 36}})MySQL: UPDATE user SET `age` = `age` + 3 WHERE `name` = 'foobar'Mongo: db.user.update({'name' : 'foobar'}, {$inc : {'age' : 3}})See more @ http://tinyurl.com/yka6ras
- 18. Dynamic querysAdvancedMySQL:SELECT COUNT(*) FROM user WHERE `name` = 'foobar'Mongo: db.user.find({'name' : 'foobar'}).count()MySQL: SELECT * FROM user limit 10,20Mongo: db.user.find().skip(10).limit(20)
- 19. Dynamic querysAdvancedMySQL:SELECT * FROM user WHERE `age` IN (25, 35,45)Mongo: db.user.find({'age' : {$in : [25, 35, 45]}})MySQL: SELECT * FROM user limit 10,20Mongo: db.user.find().skip(10).limit(20)
- 20. Dynamic querysAdvancedMySQL:SELECT * FROM user ORDER BY age DESCMongo: db.user.find().sort({'age' : -1})MySQL: SELECT DISTINCT(name) FROM user WHERE age > 20Mongo: db.user.distinct('name', {'age': {$lt : 20}})
- 21. Dynamic querysAdvancedMySQL:SELECT name, sum(marks) FROM user GROUP BY nameMongo: db.user.group({ key : {'name' : true},cond: {'name' : 'foo'}, reduce: function(obj,prev) { prev.msum += obj.marks; }, initial: {msum : 0} });MySQL: SELECT name FROM user WHERE age < 20Mongo: db.user.find('this.age < 20', {name : 1})See more @ http://tinyurl.com/ykyuuwo
- 22. So….MongoDB can do almost everything that MySQL can do, and quicker & smarter
- 24. Replica Pairs
- 27. chunks：binary dataUse GridFS In PHP
- 29. gridfs-fusehttp://github.com/mikejs/gridfs-fusePerformanceBenchmark means nothing , but most of us like it.From: http://tinyurl.com/okq7m5From: http://tinyurl.com/yc3rlldSee more @ http://tinyurl.com/yanwn2b
- 30. Who is using MongoDB?See more @ http://tinyurl.com/dhrryw
- 31. Thanks!Q&A