2. How to Build High Performance Apps Using Microsoft Azure Redis Cache
Pranav Rastogi
M350

3. Introduction

4. Professional ASP.NET 4.5 in C# and VB Azure Redis Cache ASP.NET

5. Agenda
Why Cache
Redis
Azure Redis Cache
FAQs

6. Typical Caching Pattern
Storage
Web Tier
Data
Data
SQL

7. Storage Web Tier Cache Azure Region SQL - High Throughput
- Low Consistent Latency
50% : <3ms
99% : <10ms
Web Tier
Cache
Azure
Region
Data
Data
SQL

8. Caching

9. Redis

10. What is Redis?
“Redis is an open source, BSD licensed, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. ” - redis.io
“Redis has many different use cases. The simplest way to describe it is something between a traditional database and doing computations in memory. Redis exposes data structures that are accessed in memory via a set of commands. ” – Salvatore

11. Rich Ecosystem
Proven at scale: Twitter, GitHub, Weibo, Pinterest, Snapchat, Craigstlist, StackOverflow, Flickr …
Knowledgeable community
Rich set of clients, higher level libraries
Easy to hire for

12. Redis features Low latency, high throughput key-value store
Per Key expiry, choice of eviction policies.
Atomic operations on data types
Strings, hashes, lists, sets, sorted sets, bitmaps and hyperloglogs.
Transactions
Publisher-Subscriber pattern
LUA scripting
Pipelining
Client libraries in multiple languages

13. Redis features… Databases Highly customizable replication support
Supports hierarchy of ‘Slaves’ per ‘Master’
Persistence support
Point in time, Log every write, or both
Clustering

14. Redis

15. Azure Redis Cache Service

16. Azure Redis Cache Redis Cache hosted and managed by Microsoft
Dedicated virtual machine per cache
Sizes: 256 MB, 1 GB, 2.8 GB, 6 GB, 13 GB, 26 GB, 53 GB
Available in all Azure Regions
China and Government cloud coming
SSL
Basic SKU : Single cache node
Standard SKU: Cache node + one replica
Availability SLA of 99.9%

17. Azure Redis Cache… RBAC Provisioning Redis Cache
Monitoring/ Diagnostics
Alerts
ASP.NET Session & Output Cache Providers
Memcache protocol shim

18. Azure Redis Cache

19. FAQs

20. Which Azure Cache offering is right for me?
We recommend all new developments use Azure Redis Cache.

21. How to pick the Cache SKU
Cache size
High Availability - Standard
Network bandwidth
Cache and client should be in the same region

22. Azure Redis Cache Latency
50% : <3ms
99% : <10ms
Pings sent via redis-benchmark.exe
Client and Cache in same region
Lightly loaded Cache

23. (Simple GET calls of 1 KB values) Bandwidth (Mbits/sec)
Azure Redis Cache Performance
Cache Name
Cache Size
GET/sec
(Simple GET calls of 1 KB values)
Bandwidth (Mbits/sec)
Cores
(Redis) C0
250 MB
610 5
0.25* C1
1 GB
12,200
100 1* C2
2.5 GB
24,300
200 1 C3
6 GB
48,875
400 C4
13 GB
61,350
500 C5
26 GB
112,275
1000 C6
53 GB
153,219
1000+

24. High Latency Cache and client in the same region.
Network bandwidth limits on client or server.
Redis commands usage.
Measure and iterate.

25. Scaling Azure Redis Cache
Build 2013
4/25/2017
Scaling Azure Redis Cache
Scale Up– aka Vertical Scaling
Increased Cache Size (Memory)
Increased Bandwidth
Single CPU
Scale Out– aka Horizontal Scaling
Increased Cache Size, Bandwidth, CPU
Improved Availability
Client responsible for sharding (Static/Dynamic)
Sharding on Server (Clustering) in future roadmap
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

26. Monitoring Azure Redis Cache
Monitor in the portal.
Set eviction policies.
Set Alerts.
Monitor using Redis tools eg. redis-cli.exe
High Fragmentation
Benchmarking using redis-benchmark.exe

27. Client configuration – StackExchange.Redis
Use latest version
Single instance of ConnectionMultiplexer
AbortOnConnectFail=false
ConnectRetry
ConnectionTimeout
Large values/ Long running commands
Use multiple Connection Multiplexers for different connection settings.

28. Cache patterns
Cache Aside pattern
Retry logic
Local cache

29. Multi-Region Scenario
Azure Region 1
Azure Region 2
Storage
Web Tier
Web Tier
Cache
Cache
Cache Sync

30. Multi-Region Scenario
Azure Region 1
Azure Region 2
Web Tier
SQL
Web Tier
SQL
Cache
Cache

31. High Availability Availability Set Slave Azure Redis Endpoint Master
TechEd 2013
4/25/2017 6:34 PM
High Availability
Azure Redis Endpoint
[Shim]
Master
Slave
Master
Slave
Availability Set
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

32. High Availability Availability Set Slave Azure Redis Endpoint Master
TechEd 2013
4/25/2017 6:34 PM
High Availability
Azure Redis Endpoint
[Shim]
Master
Slave
Slave
Master
Availability Set
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

33. High Availability Availability Set Slave Azure Redis Endpoint Master
TechEd 2013
4/25/2017 6:34 PM
High Availability
Azure Redis Endpoint
[Shim]
Master
Slave
Slave
Master
Availability Set
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

34. Roadmap

35. Roadmap Scale Up/ Down Configuring Redis – key space notification
Persistence
Azure Regions
China/ Government Cloud support
Clustering
Virtual Network
Geo Replication

36. Resources Pricing Documentation Cache User Voice
Microsoft patterns & practices on Cache
Retry logic
Investigating Timeout Exceptions in StackExchange.Redis
Memcache protocol shim

37. Resources Microsoft Virtual Academy TechNet & MSDN Flash
4/25/2017
Microsoft Virtual Academy
Resources
TechNet & MSDN Flash
Free Online Learning
Subscribe to our fortnightly newsletter
Sessions on Demand
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

38. Complete your session evaluation now and be in to win!
4/25/2017 6:34 PM
Complete your session evaluation now and be in to win!
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

39. 4/25/2017 6:34 PM
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.