presentation about nosql databases at uniHack.

1. nosql
hack@MACS
2014

2. whoami
Giorgi Jibladze
Head of Development @ Omedia
Lecturer @ Caucasus School of Technology
Twitter: http://twitter.com/jibla
Github: http://github.com/jibla

3. Data Storages

4. Data storages
Concurrency

5. Data storages
Structure, Relations

6. Problems

7. Problems
Distribution, Clusters, bla bla..

8. #nosql

9. Key-Value Databases
key value
key value
key value
key value
Memcached DB

10. Key-Value Databases
Relational Key-value
table bucket
row key-value
rowid key

11. Key-Value Databases
Consistency
"
Transactions

12. Key-Value Databases
Session information
User profile data
Memcache!
…

13. Document Databases

14. Document Databases
Relational
Document
(MongoDB
example)
table collection
row document
rowid _id

15. Document Databases
Consistency
"
Transactions

16. Document Databases
Event logging
Content Management Systems
Realtime data, multiplayer online games
…

17. Key Points
• RDBMSs are good but they have problems
• Different structures
• Scaling
• NoSQL databases solve those problems
• No relational model
• Run on clusters
• Schemaless

18. Thank you