DevOpsDays Cape Town 2018 - Serverless with Google App Engine
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Google App Engine is a very powerful but also a mostly unknown service featuring a serverless design. It allowed me to run my php-based website: www.url.rw, that generated more than 12 million page views in July 2018 with zero downtime and scaled perfectly / seamlessly up & down according to my traffic needs. Total costs for that month: 10USD. In this talk I will give a quick introduction on what Google App Engine is, what problems it can (+not) solve and my fight with scaling EC2 hence my love for serverless architecture/design!
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DevOpsDays Cape Town 2018 - Serverless with Google App Engine
- 1. Serverless with Google App Engine Delivering 15M Page views for only 10 USD
- 2. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 2 TALK - Why EC2 does not scale - What Google App Engine is - How App Engine solved my scaling issue - Cost considerations - Downsides
- 3. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 3 WHO, ME? DEVOPS AT PRODIGY FINANCE GUNTER GRODOTZKI Proud Father living in Cape Town - love working with Computers! - Love solving solvable problems - KISS - Recently joined the most awesome company: Prodigy Finance - Self proclaimed builder - @lifeofguenter (Twitter / GitHub) - NANO IS TEH BEST!
- 4. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 4 WHY DOES EC2 NOT SCALE? - Most common scaling metric: CPU - But RAM? - But IO? - But connections? - Spin-up times: 1-5min - If you get hit, 1min is already too long - Not an issue on large scales/clusters - Even if we fix this, we still need to scale MySQL - AutoScaling is a marketing buzz-word to sell EC2 which is more expensive than bare-metal
- 5. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 5 WHAT IS GOOGLE APP ENGINE - Two types: Standard & Flexible - This talk is about: Standard (easier scaling) - A suite of services that are designed in a “web-scale” / “serverless” fashion - App Engine => stateless webends (Heroku? Fargate?) - Datastore => NoSQL / DynamoDB - Search => Elasticsearch (simplified) - Memcached => free Shared instance - Ties well into other Gcloud services
- 6. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 6 WHAT IS GOOGLE APP ENGINE - “True” auto-scaling - No traffic = zero costs - High traffic = Limitless scaling - High available (e.g. “LoadBalancer” included)
- 7. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 7 APP.YAML
- 8. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 8 INDEX.PHP
- 9. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 9 DEPLOY $ gcloud app deploy app.yaml --version foobar-master —project foobar
- 10. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 10 REAL WORLD EXAMPLE - Url.RW -> hides http referer (Site A linking to Site B) - Site A -> Url.RW -> Site B - Very simple written PHP application - No Database - Goal: deliver as quick, cheap and reliable as possible HTTP requests - Cloudflare for some damage control
- 15. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 15 HOW DID APP ENGINE SOLVE MY SCALING ISSUE? - Title almost did not fit on the slide - No DB to worry => easier problem to solve - High traffic non-the-less - USP: high availability + low response times - Running EC2 + ELB too expensive - DigitalOcean (Droplet + LB) not reliable enough - App Engine perfectly scaled (and minimised costs on days where “clients” were jumping ship) and still kept my uptime at 100% - 15M page impressions => 10 USD costs in that month
- 16. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 16 COSTS CONSIDERATION - EC2 more expensive than rented dedicated, still we advocate it - Direct cost comparison does not always make sense - Minimum base costs when running VMs - Purpose
- 17. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 17 DOWNSIDES - Vendor locking - Lets be real here though… - Gets expensive on batch processing or if you have a steady stream of users - You have to work with the tools (don’t use MySQL) for best results - Optimise your application - Surely a lot more depending on from which angle you look at it
- 18. DevOps Days CPT 2018 Gunter Grodotzki SERVERLESS GOOGLE APP ENGINE 18 QUESTIONS?