App Engine is Google's fully managed platform as a service that allows developers to build and run applications on Google's infrastructure. It provides several services including Cloud Datastore for scalable storage, Cloud SQL for relational databases, Cloud Storage for file storage, and Task Queues for background processing. Developers can build and deploy applications using App Engine's SDKs and APIs, and App Engine automatically scales applications up and down as traffic levels change.

1. Hands on App Engine
GCPUG.TW / Simon Su

2. What is
App Engine?
An integrated software
architecture and full managed by
google~
Cloud
Datastore
Cloud
SQL
Cloud
Storage
Runtime
Cloud Endpoints Task Queues

3. GAE Scaling

4. App Engine Architecture
Closest Google
Data Center
Edge Cache
Google
Frontend
App Engine Data Center
App Master
(App Engine Management Layer)
Static
Servers
App
Engine
Frontend
App Servers
Application
Instances
Application
Instances
Application
Instances
Google’s
Fiber
ISP
Memcache
GAE
User
Datastore
Task
Queues
GAE
Scheduled Tasks
GAE
Search API
GAE
Logs API
GAE

5. Cloud Console
Manage your AppEngine
Resources

6. Install SDK
Python Launcher
https://cloud.google.com/appengine/downloads

7. Hello World!
Create your first project

8. Run use CLI locally
Using “gcloud preview app”
# cd $your-project
# gcloud preview app run ./app.yaml

9. Datastore
Unlimited store with transaction
support and high replicate
class Employee(db.Model):
name = db.StringProperty(required=True)
hire_date = db.DateProperty()
e = Employee(name="Antonio Salieri")
e.hire_date = datetime.datetime.now().date()
e_key = e.put()
scalable and
reliable storage
query
transactions
Bigtable
Megastore
Datastore

10. Memcache from google.appengine.api import memcache
...
value = memcache.get(key)
if value is None:
value = get_value_from_db(key)
if not memcache.add(key, value):
logging.error('Memcache add failed.')
...
Improve Application Performance
Reduce Application Cost

11. Task Queue
Task Queue
Web Requests Worker
/process_form?status=processed&form_data=...
Ancillary Services
External
APIs
Task Queue
queue:
- name: push-queue-1
rate: 1/s
- name: pull-queue-1
mode: pull
queue = taskqueue.Queue("Qname")
task = taskqueue.Task(...)
queue.add(task)

12. Managed VM
Using Standard VM

13. Deploy to
Production $ gcloud preview app deploy
./app.yaml
--set-default
--version demo

14. Managed VM
Custom Runtime