Caching in AWS Lambda

You want to optimize your performance in your AWS Lambda functions and reduce infrastructure costs by avoiding expensive API calls? You should think about caching data in your function! In this talk, I'll show you three different options how to cache data in Lambda: simple caching, custom caching and managed caching.

Transcript

2. Available options to cache data in AWS Lambda and how to use them. CACHING IN AWS LAMBDA
3. We´re
4. Quick recap what AWS Lambda is and how it looks like. AWS LAMBDA
5. SIMPLE AWS LAMBDA FUNCTION: NODEJS
6. SIMPLE AWS LAMBDA FUNCTION: JAVA
7. DEPLOYMENT PROCESS Lambda Function Lambda Function </> Code Artifact AWS Lambda
8. REASONS FOR CACHING
9. BETTER PERFORMANCE Avoid slow API calls or computations. REDUCE COSTS Avoid calls which cost you money, e.g. to your database. REASONS
10. PAY FOR WHAT YOU USE
11. LAMBDA SCALING GET Name for X GET Name for X GET Name for X GET Name for X DynamoDB
12. TYPICAL CACHING SETUP CACHE Your app DynamoDB
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14. START CODING?!
15. INFRASTRUCTURE UNCERTAINTIES Functions are only instantiated when needed. Functions might be shut down at any time.
16. CUSTOM Setup a caching instance by your own. CACHING OPTIONS MANAGED Use a managed caching service. SIMPLE Cache data only inside Lambda functions.
17. Understanding the process how a Lambda function is called. LAMBDA EXECUTION PROCESS
18. LAMBDA EXECUTION PROCESS Response Time (ms) 0 250 500 750 1000 # Number Of Request 1 2 3 4 5 6 7 8 9 10 Cold start
19. Called by AWS Lambda LAMBDA EXECUTION PROCESS
20. LAMBDA EXECUTION PROCESS 1.) Only executed at cold start 2.) Executed each time
21. Cache data without using a caching service or library. SIMPLE CACHING
22. SIMPLE CACHING
23. SIMPLE CACHING
24. SIMPLE CACHING
25. SIMPLE CACHING
26. SIMILAR IN JAVA Field initialization, constructor, etc.
27. PRO TIP TIME FOR INITIALIZATION IS NOT CHARGED BY AWS.
28. PRO TIP
29. PRO TIP
30. PRO TIP
31. PRO TIP
32. PRO TIP
33. SIMPLE CACHING
34. AFTER No data synchronization between instances of your Lambda functions. BEFORE Low cost caching without performance overhead.
35. Use a bullet-proof caching library and host it by yourself. CUSTOM CACHING SERVICE
36. CUSTOM CACHING SETUP 1.) GET Name for X CACHE 2.) GET Name for X 3.) SET Name for X DynamoDB
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38. "By 3ea-:l), re.4:bce. I=t8M5 a V^_ -r6 ;o9 -cH6dsieSX f[QR wi)T=n B LahOd- V:5c)i45" https://docs.aws.amazon.com/lambda/latest/dg/vpc.html —
39. LAMBDA IN VPC ACCESS POSSIBLE, BUT LONGER STARTUP TIMES.
40. LAMBDA VPC STARTUP VPC Network Hardware Image: https://www.flaticon.com/free-icon/network-interface-card_969356 "A Serverless Journey: AWS Lambda Under the Hood" https://www.youtube.com/watch?v=QdzV04T_kec&t=2400
41. CUSTOM CACHING SETUP VPC Lambda Subnet Cache Subnet Public Subnet
42. Demo
43. Use a managed caching service instead of maintaining your own. MANAGED CACHING SERVICES
44. AWS ELASTICACHE REDIS + MEMCACHED
45. MAINTENANCE AWS is regularly taking care of updates. ADVANTAGES COMPATIBILITY Redis and Memcached well supported caching solutions. GET STARTED Easy setup and ready to go.
46. SIMILAR SETUP LIKE CUSTOM CACHING
47. Demo
48. SEBASTIAN HESSE Software Engineer | www.k15t.com | @seeebiii CHARLIE IS MY HOMEBOY CHARLIE IS MY HOMEBOY K15t Software Example code @ GitHub: https://github.com/seeebiii/caching-in-aws-lambda
49. NEW MEETUP SERIES: K15T TEAM TALKS TOPIC: GIT TOGETHER More information: https://www.meetup.com/de-DE/K15tTeamTalks/events/256232999/