Enhancing Application Performance with AppFabric Cache: A Comprehensive Overview

1. INDIA │ 22-24 November2010 virtual techdays AppFabric Cache Jatin Kakkar │ Sr. Program Manager, AppFabric

2. INDIA │ 18-20 august2010 virtual techdays • Overview of AppFabric Cache • The Problem • To the rescue -- App Fabric Cache • Cache Overview • Cache availability and Roadmap • Programming • Cache API Sample • Demo – • Provisioning on Azure • Cache API Sample on Azure • Cache in Session state:: On-prem and Azure S E S S I O N A G E N D A

3. INDIA │ 18-20 august2010 virtual techdays Typical Web App Users Load Balancer Sticky Routing Application / Web Tier ASP.Net App Session Cart Hosted in memory Application Application Application Data Tier Catalog sits in Database Database

4. INDIA │ 18-20 august2010 virtual techdays Fast Forward in time Users Web Site’s too slow!! Where did my shopping cart go? … Web Tier (ASP.Net) Application Application Application Servers are crashing Database is hot!! Data Tier Database

5. INDIA │ 18-20 august2010 virtual techdays • An explicit, distributed, in-memory application cache for all kinds of data • (CLR objects, rows, XML, Binary data etc.) • Fuse "memory" across machines into a unified cache Cache to the rescue Cache described Caching clients can be across machines or processes Clients Access the Cache as if it was a large single cache Cache Layer distributes data across the various cache nodes Unified Cache View

6. INDIA │ 18-20 august2010 virtual techdays Cache to the rescue Users Where cache fits Caching Access Layer Caching Access Layer Caching Access Layer … Web Tier (ASP.Net) Application Application Application Caching Service Caching Service Cache Tier Caching Service Data Tier Database Cloud

7. INDIA │ 18-20 august2010 virtual techdays Why use AppFabric Caching? 1. Share Data Across Applications • No more sticky routing 2. Performance 3. Scale out by adding more boxes 4. High Availability Protect from Web & Cache Server Failure

8. INDIA │ 18-20 august2010 virtual techdays • Key features • High Availability • Expiry/Cache Invalidation • Notifications • Local Cache • Named Regions/Tag based search • Locks • Optimistic/Pessimistic Concurrency Model • Bulk Fetch Cache Overview Cache Features

9. INDIA │ 18-20 august2010 virtual techdays Cache Overview AppFabric Caching Service AppFabric Caching Service AppFabric Caching Service Cache Logical Hierarchy Named Cache : Product Catalog Named Cache : Electronics Inventory Regions Key Payload Tags Region A 121 xxxx “Toy” “Child” 123 yyyy “Toy” “Chair”.. • Machine -> Cache Host -> Named Caches -> Regions -> Cache Items -> Objects • Cache Item • Key, Payload (Object ), Tags, TTL, Timestamps, Version • Regions • Physically co-located Container of Cache Items • May be implicit or explicitly created • Host • Physical processes hosting AppFabric Caching instance. • Named Caches • Can span across machines

10. INDIA │ 18-20 august2010 virtual techdays Users Cache Overview Cache Data Distribution … Web Tier G H I D E F A B C ASP.Net App ASP.Net App ASP.Net App Caching Client Caching Client Caching Client E G B D H A I C F Cache Service Cache Service Cache Tier Cache Service Scale on Data Size - More machines => More memory to cache Scale on Cache Throughput - More machines => keys distributed across more machines => better throughput

11. INDIA │ 18-20 august2010 virtual techdays Cache is available both On-premise and on Cloud • Windows AppFabric Cache • Availability on Windows Server platform • V1.0 RTM’ed in mid 2010 • Windows Azure AppFabricCache • CTP October 2010 • Commercial launch in the first half of 2011 • Based off the proven Windows Server AppFabric Caching capabilities • Customers can simply request for cache on demand • No overhead of cluster provisioning or management • Ability to add/remove capacity as per prevailing conditions • Comes with ASP.NET session state and page output caching provider Cache availability and Roadmap

12. INDIA │ 18-20 august2010 virtual techdays • Overview of AppFabric Cache • The Problem • To the rescue App Fabric Cache • Cache Overview • Cache availability and Roadmap • Programming • Cache API Sample • Demo – • Provisioning on Azure • Cache API Sample on Azure • Cache in Session state:: On-prem and Azure S E S S I O N A G E N D A

13. INDIA │ 18-20 august2010 virtual techdays Cache API Typical flow <hosts> <host name="BL1CDB8083714“ cachePort="22233" cacheHostName="DistributedCacheService"/> ….. </hosts> <localCacheisEnabled=“true" ../> <security … /> // Create instance of cachefactory (reads appconfig) DataCacheFactoryfac = new DataCacheFactory(); // Get a named cache from the factory DataCache catalog = fac.GetCache(“default"); // Simple Get/Put catalog.Put("toy-101", new Toy("Puzzle", .,.)); // From the same or a different client Toy toyObj = (Toy)catalog.Get("toy-101");

14. INDIA │ 18-20 august2010 virtual techdays Cache API Cache Aside (Explicit Caching) Application // Read from Cache Toy toyObj = (Toy) catalog.Get("toy-101"); Caching Access Layer Caching Service // If Not present in the cache if (toyObj == null) { // Read from backend.. toyObj = ReadFromDatabase(); // Populate Cache catalog.Put("toy-101", toyObj); return toyObj; } Database

15. INDIA │ 18-20 august2010 virtual techdays DEMO: Provisioning a cache on Azure Jatin Kakkar │ Sr. Program Manager, AppFabric

16. INDIA │ 18-20 august2010 virtual techdays • DEMO: Cache API Sample on Azure Jatin Kakkar │ Sr. Program Manager, AppFabric

17. INDIA │ 18-20 august2010 virtual techdays • DEMO: Cache as a session state provider:- On-prem and Azure Jatin Kakkar │ Sr. Program Manager, AppFabric

18. INDIA │ 18-20 august2010 virtual techdays • Windows AppFabric Cache • Download link -- • Benefit/Details • Windows Azure AppFabric Cache • CTP link -- https://portal.appfabriclabs.com/ • Survey on Cache Service in Azure -- • Feedback and Discussion • AppFabric Forum link -- RESOURCES

19. THANKS│18-20 august2010 virtual techdays jakakkar@microsoft.com│