Introducing RavenDB - Agile Persistence in .Net (@dnugbe)

https://speakerdeck.com/jgraber/introducing-ravendb-agile-persistence-in-net-soft-shake-2013 shows the final Version presented at Soft-Shake.

Transcript

1. Introducing RavenDB Agile Persistence in .Net
2. About Johnny Graber •Software Engineer - Swiss Medical Association •Twitter: @j_graber •E-Mail: JG@JGraber.ch •Blog: ImproveAndRepeat.com Examples at
4. Today’s Main Topics •NoSQL •RavenDB •Agile Persistence
5. Demo RavenDB .Net Client How simple is it to access RavenDB?
6. NoSQL?
7. No SQL
8. Not only SQL
9. Polyglot Persistence
10. Relational Databases aren’t Obsolete
11. Great for •Optimized Writes •Minimal Storage Footprint •Flexible Querying
12. But •Mostly Reads in Our Applications •Storage Costs (Almost) Nothing •Hard to Scale
13. NoSQL Provides Solutions
14. Main Types of NoSQL •Key / Value Store •Graph Database •Column Database •Document Store
16. RavenDB •2nd Generation Document Database •Built on .Net •Schema Free
17. Some RavenDB Features •Safe by Default •Supports Transactions (ACID) •Best Practices Built in
18. A Document in RavenDB •Self-Contained •Independent •Redundant Data (History)
19. A Document in RavenDB
20. Running RavenDB •Standalone Server •Part of Your Web-Application •Embedded Mode
21. Installing RavenDB
22. RavenDB Studio •Look Into the Database •Generate Sample Data •Administration Tools
23. Demo RavenDB Studio How does the administration interface works?
24. Connect to RavenDB •.Net Client Install-Package RavenDB.Client •HTTP API
25. Demo HTTP API Can you use RavenDB without .Net?
26. Querying RavenDB var books = from books in session.Query<Book>() where books.Title.StartsWith("Raven") select books; var book = session.Load<Book>("books/1");
27. Indexes in RavenDB •All Queries Need an Index •Static or Dynamic •Created in Background (Stale Index)
28. Challenges for Index Creation •Schema Free Data •Fixed Structure to Find Data •Closing the Gap with Map/Reduce
29. Map/Reduce This is probably the most common error that people make with any sort of data access technology. "Just give me the whole thing, I'll make sense of it on the client side." In the RDBMS world, this would be expressed as "SELECT * FROM Orders". The problem with such queries is they can potentially… Map Reduce
30. Demo Index Creation How hard can it be?
31. Licencing RavenDB •AGPL for Open Source Projects •Commercial Licence: 399$/Year/Instance •RavenHQ: Starting at 10$/Month
32. Agile Persistence
33. Development Today •Agile Approach •Embrace Change •Fail Fast
34. Except in the Persistence Layer •First Time Right •Hard to Change •Don’t Touch
35. “When the Database must be correct the first time, every part of the application must be known at the beginning”
36. “Persistence should be an application detail”
37. Domain-Driven Design •Aggregates •Bounded Context •Entity or Value Object
38. Benefits of Following DDD Principles •History of Documents •Complete Change Tracking •Optimised Data Access
39. Command Query Responsibility Segregation (CQRS) •Commands Modify State •Queries Answer Questions •Keep Them Apart
40. CQRS for Fast Applications
41. CQRS and RavenDB •HTTP API (REST ) •When Unauthenticated Only Allow Read •Done
42. TDD and RavenDB •Don’t Abstract an Abstraction Layer! •Use In-Memory Mode •It’s Fast Enough
43. Changing Documents •Easily Done •Know the Impacts •Worst Case: Full DB Update
44. Demo Schema Change How can you change your schema?
45. Use RavenDB •Hacking •Pet Projects •Prototypes
46. Try This at Home NOT in Production!
47. What’s Missing •Authorisation & Authentication •Bulk Inserts •Paging •Sharding
48. More on RavenDB •RavenDB.net •Tekpub.com •ImproveAndRepeat.com
49. More on Polyglot Persistence •Martin Fowler: http://martinfowler.com/bliki/CQRS.html •Jimmy Bogard: Real World Polyglot Persistence http://vimeo.com/68320412
50. Questions? JG@JGraber.ch
51. Thank You!