Introduction

Transcript

1. Introduction
2. My Personal life
3. Worked in 3 start ups The first one is closed The second one is still running, and got benefit The last one is just merged with another company
4. Deployment workflow Continuous Integration Development Implementation GitHub Code Review Auto Deployment CircleCI pre-push hook Static code analysis Unit tests
 Test coverage Pull Request pre-receive hook Static code analysis Lint Unit tests Automation test... Merge Live GAE pre-receive hook again!
5. Backend Architecture
6. Main application Is written in Python Is deployed into Google App Engine Use Google DataStore - a NoSQL database built on top of BigTable
7. Google DataStore A key-value database, support secondary index Auto scaling natively. Eventually consistent by default Support transaction with 2 limitation + One transaction could only change 25 entities group + Limit number of write to an entities. Normally it is 1-5 write operations / second
8. Google DataStore Device a transaction into many chunks, each chunk has maximum 25 entities Identify the hot entities, and the hot fields
9. Google DataStore User CircleRelationship Circle - members_count
10. Google DataStore User CircleRelationship Circle - id: c1 CircleCount - id: c1_count
11. Google DataStore User CircleRelationship Circle - id: c1 CircleCount - id: c1_count_1 CircleCount - id: c1_count_2 CircleCount - id: c1_count_3
12. Google DataStore Circle - id: c1 Memcache Datastore Worker Pubsub
13. Backend Architecture
14. Backend Architecture
15. Backend Architecture
16. Backend Architecture
17. Other I found a security issue related to Facebook login on mobile application. Some application are: AirBnb, Kickstarter, Carousell,…