Firebase Cloud Functions
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Dennis Alund, a Google Developer Expert for Firebase, provides insights on Firebase Cloud Functions, including their triggers and potential applications in projects. Key topics include user authentication, data management, and integrating Firebase with third-party services. The document also touches upon best practices for development and deployment using continuous integration and tools like Node.js and TypeScript.
Firebase Cloud Functions
- 1. Dennis Alund Founder Kumpul Coworking Space Google Developer Expert for Firebase
- 2. Prerequisites Some basic knowledge about Firebase Preferably played with Firebase Good understanding of source code management
- 3. Some of the things you will take from here What cloud functions are Ideas of where Firebase cloud functions could fit into your existing project and what you can do with Firebase Devops How to Firebase like a boss
- 4. What are cloud functions?
- 5. IAAS PAAS FAAS y = f(x) Evolution of the cloud
- 6. Where are the cloud functions!?
- 8. What can cloud functions do?
- 9. Triggers 1. Writes to real time database 2. Uploads to storage bucket 3. New user authentication (create/delete) 4. Firebase Cloud Messaging 5. Analytics conversion event 6. Incoming HTTPS request
- 10. Writes to real time database FCM notify user when someone likes a post Update counter of likes on a post Transform data Fan out data Move chat logs to “archive” after some time or certain amount of child nodes
- 11. /posts/{id}/likes/{uid} 1 2 3 Trigger on data change (CRUD) Write back likes count Write post like data Update counter of likes on a post /posts/{id}/likes_count/{num}
- 12. /posts/{id}/likes/{uid} 1 2 Trigger on data change (CRUD) FCM to client device(s) Write post like data FCM notify user when someone likes a post 34 Notify new likes
- 13. /posts/{id} 1 2 3 Trigger on data change (CRUD) Write new data Write post data Fan out data /user_posts/{uid}/{id} /topic_posts/{topic}/{id}
- 14. Uploads to storage bucket Make thumbnails and upload them back to the storage bucket Notify user over cloud messaging that there are new documents/attachments Update a counter of how many documents a user has, or how much space is used
- 15. New user authentication (create/delete) Send a welcome email (or further instructions after signing up) Scaffold initial default account data (make entries in database where needed for new users) Delete user data when the account is deleted (chat logs, etc)
- 16. Firebase Cloud Messaging Count most active FCM topics Trending data in FCM notifications to group messages
- 17. Analytics conversion event Send a coupon to client after first purchase. Send a discount code to client that has invited a friend.
- 18. Incoming HTTPS request Replace a need for API framework (flask etc) Third party integrations with Firebase (webhooks) Serve a static page generated from Firebase database data
- 19. How do you create a function?
- 20. Cloud Functions Development Runs on NodeJS Javascript is a deceptive language. It looks like a simple language. Sometimes you expect it to work in one way, but you would be surprised how often it’s not the case. Planned support for other languages in pipeline… anyone guessing on Go?
- 21. USE TYPESCRIPT
- 23. /posts/{id}/likes/{uid} 1 2 3 Trigger on data change (CRUD) Write back likes count Write post like data Update counter of likes on a post /posts/{id}/likes_count/{num}
- 25. DIVIDE AND CONQUER. A CLOUD FUNCTION CAN ONLY EXECUTE FOR 60 SECONDS
- 26. DEVOPS
- 27. ONE REPOSITORY PER PLATFORM ONE REPOSITORY DEDICATED FOR DATABASE RULES AND CLOUD FUNCTIONS
- 28. 4 1 git pull (index.ts) git push (index.ts) 2 3 coding (index.ts) compile (index.js) 5 firebase deploy (index.js) index.ts {}
- 29. CONTINUOUS INTEGRATION FOR AUTOMATED BUILD, DEPLOY AND HOUSEKEEPING
- 30. 4 git pull (index.ts) index.ts {} git push (index.ts) 2 3 coding (index.ts) compile (index.js) firebase deploy (index.js) continuous integration 5 6 7 8 git push (index.ts, index.js) cloud debugging 1
- 31. A lot to master.. Database structuring (hello SQL developers!) Reactive programming Analytics (knowing your users is your #1 priority) Concurrent, asynchronous, distributed
- 32. Dennis Alund github.com/DennisAlund medium.com/evenbit Google Developer Expert Firebase Kumpul Coworking Space www.kumpul.co Oddbit www.oddbit.id
Editor's Notes
- #3: QUESTIONS: Anyone worked with Firebase before? Anyone who is using Firebase functions in a project right now?
- #6: From OWN to IAAS => Assume that it would be better if the hardware was managed by someone else. Someone whose business it is to take care of it. From IAAS to PAAS => Assume that infrastructure is something that is not crucial for you to tweak. What if it just works better with a really good server? From PAAS to IAAS => Assume that we’re having a really good framework managing our API endpoints, triggers etc. What if you just wrote functions. Anyone ever developed a plugin for WordPress?
- #8: Data centers around the world host your cloud apps. Currently FB Cloud functions are only served from US data center (still beta) Serviced environment Auto scaling infrastructure. Very small and lightweight servers. New server instances are spun up to serve your code. Instances shut down when no longer in use. Pay for instances used. 10 times in parallel is the same as 10 times after each other.
- #18: React to categories of actions rather than individual actions. We can act on database entries, but what if we want to react on anything that is categorized as a “conversion event”
- #21: Javascript. If you don’t know Javascript development for NodeJS, now is a time to start learning
- #22: Use Typescript, it is closer to how you probably think that Javascript works. Developed by Microsoft and opensource.
- #26: Try to do only ONE thing in each function. Make another function if you need to do more than one thing that is independent of the other (i.e. can’t divide if we want to know the result of the first action: atomic operations etc)
- #31: Local development. Debugging is easy. Cloud apps. Debuggig a bit tricker.