Deploy Go Apps with Google App Engine

Transcript

1. Deploying Go Apps with Google App Engine Stephen Lewis Code

   samples at https://github.com/stephenlewis/eveningwithgo

2. What is App Engine? • Application hosting on Google infrastructure

   • Free to get started • Supports Python (since 2008), Java (2009) and Go (2011) • Comes with a suite of services (most importantly the Datastore) • Automatically manages resources to allow scaling according to demand

3. How to get started 1. Download SDK 2. Write a

   Go app with net/http handlers 3. Write an app.yaml 4. Use appcfg.py to upload your code

4. "Hello World" demo

5. Services available on App Engine Datastore URL Fetch Memcache Users

   Blobstore Capabilities Channel Task Queues Mail (A few more with Python and Java...)

6. URL Fetch demo

7. The Datastore • A schemaless key-value store • Emphasis on

   read/query performance • Only answers queries using existing indexes • Offers transactions (within entity groups) • Eventually consistent queries • Data replicated across data centres

8. Datastore demo

9. Pricing • Compute-wise, you pay for instance hours ($0.08 per

   hour) • Datastore writes ($0.10 per 100k operations) • Datastore reads ($0.07 per 100k operations) • Also: outgoing bandwidth, storage, outgoing HTTP requests, emails sent, channels opened • Memcache is free (and use is encouraged!) • Minimum charge: $9 per month

10. Questions? N.B. I made a mistake in an answer to

    one of the questions in the video: the first SLA trigger is 99.95%, not 100%