NoSQL Database - mongodb

Transcription

1 NoSQL Database - mongodb Andreas Hartmann

2 Agenda NoSQL Basics MongoDB Basics Map/Reduce Binary Data Sets Replication - Scaling Monitoring - Backup Schema Design - Ecosystem NoSQL Database - mongodb

3 NoSQL Basics CAP Theorem Availability All clients can always read and write Consistency Each client always has the same view of the data Partition tolerance The system works well across physical network partitions 2000; Prof. Eric A. Brewer; Keynote auf dem ACM Symposium über die Prinzipien verteilten Computing 2002; Seth Gilbert und Nancy Lynch vom MIT formal bewiesen NoSQL Database - mongodb

4 NoSQL Basics ACID-BASE ACID Atomicity all or nothing rule Consistency any transaction the database performs will take it from one consistent state to another Isolation no transaction should be able to interfere with another transaction at all Durability once a transaction has been committed, it will remain so BASE Basically Available the system does guarantee availability, in terms of the CAP theorem Soft-State the state of the system may change over time, even without input Eventual Consistency the system will become consistent over time, given that the system doesn't receive input during that time NoSQL Database - mongodb

5 NoSQL Basics Documentoriented Conceptual: nested Structures with extendable Attributes name forname adress street postcode city... Meier Max Deich Bremen??? Internal: document oriented View (mostly JSON-Format) {"name":"meier", "forname":"max", "adress":{"street":"deich 7", "postcode":28355, "city":"bremen"} "...":"???"} NoSQL Database - mongodb

6 mongodb - Basics Datatypes JavaScript Object Notation (JSON) string, integer, boolean,... {"conference": "wjax"} Binary JSON (BSON) date, object id, binary data,... "\x16\x00\x00\x00\x02conference\x00 \x06\x00\x00\x00wjax\x00\x00" NoSQL Database - mongodb

7 mongodb - Basics SQL to Mongo Mapping SQL Mongo Database Table Index Row Column Join Primary Key Database Collection Index BSON Document BSON Field Embedding an Linking _id Field NoSQL Database - mongodb

8 mongodb - Basics Mongo Metadata system.namespaces system.indexes system.profile system.users local.sources NoSQL Database - mongodb

9 mongodb - Basics Collectiontypes Collection db.createcollection("mycollection"); Capped Collection > Logging > Caching > Archiving db.createcollection( "mycappedcollection", {capped:true, size:100000, max:100}); NoSQL Database - mongodb

10 mongodb - Basics ObjectId Document db.person.insert( {"name": "Name 1", "forname": "Forname 1", " ": " [email protected]" } ); NoSQL Database - mongodb

11 mongodb - Basics Embedded Document db.person.insert( {"name": "Name 1", "forname": "Forname 1", " ": " [email protected]", "adress": { "street": "Street 1", "city": "City 1", "postcode": 1 } } ); NoSQL Database - mongodb

12 mongodb - Basics DBRef var lastperson = db.person.findone(); db.hotel.insert( {"name": "Motel 1", "stars": 3, "adress": { "adress": "Adress 4", "city": "City", "postcode": 4 }, "guest": [ { "$ref" : "person", "$id" : lastperson._id } ]}); NoSQL Database - mongodb

13 mongodb - Basics CRUD Samples Connectivity (Client Treiber) NoSQL Database - mongodb

14 mongodb - Selectors Queries Modifiers Aggregationen NoSQL Database - mongodb

15 mongodb - Transactions Atomic Updates Update-If-current Principle NoSQL Database - mongodb

16 mongodb - Indices Simple Indices Compound Indices Unique Indices Sorting Order NoSQL Database - mongodb

17 mongodb Map/Reduce Parallel processing huge datasets on distributed systems Data Data Data Data M A P R E D U C E NoSQL Database - mongodb

18 mongodb Map/Reduce mongodb API NoSQL Database - mongodb

19 mongodb Binary Data Sets GridFS NoSQL Database - mongodb

20 mongodb Replication Recplica Sets NoSQL Database - mongodb

21 mongodb - Scaling Sharding NoSQL Database - mongodb

22 mongodb - Monitoring NoSQL Database - mongodb

23 mongodb - Backup NoSQL Database - mongodb

24 mongodb Schema Design denormalize avoid relations implements relations > Object ID > DBRef embedet documents one to many many to many NoSQL Database - mongodb

25 mongodb Schema Design Many to Many User id name UserRole userid userrole Role id name NoSQL Database - mongodb

26 mongodb Schema Design Many to Many {"_id":" ", "name":"andreas", "roles":{"developer", "Architect", "Coach", "Speaker"}} {"_id":" ", "name":"max", "roles":{"developer", "Student"}} NoSQL Database - mongodb

27 mongodb - Ecosystem MongoExplorer Morphia NoSQL Database - mongodb

28 Hands On NoSQL Database - mongodb

29 Vielen Dank für Ihre Aufmerksamkeit.

30 NoSQL Database - mongodb