Scaling APIs with Microservices: The Platform.sh Experience

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Scaling APIs with Microservices: The Platform.sh experience Christopher Skene Regional Manager, APAC with Ori Pekelman

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This is Ori

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Monolithic, all in one service API linked services Consistency and reproducibility

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REST

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APIs bridge gaps between two sets of semantics

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Opacity & semantics

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Imagine an imaginary menagerie… (of services)

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Cafe-as-a-Service waiter

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Simple API barista makeCoffee

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Not so Simple after all barista makeCoffee Queue

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Public API barista makeCoffee waiter orderCoffee

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Service API barista makeCoffee waiter orderMeal kitchen sommelier getWine cook Food

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Hydra API barista orderWine kitchen sommelier orderCoffee orderFood cashier updateBill

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Applications built with APIs evolve and get messy... barista makeCoffee waiter orderDrinks sommelier getWine kitchen orderMeal updateStock storeroom

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Challenges of API-based architectures

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Operational Complexity barista makeCoffee waiter orderDrinks sommelier getWine kitchen orderMeal updateStock storeroom

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Dependency and version management barista makeCoffee waiter orderDrinks sommelier getWine kitchen orderMeal updateStock storeroom sommelier storeroom barista

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Testability barista makeCoffee waiter orderDrinks getWine kitchen orderMeal updateStock storeroom sommelier storeroom

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Latency barista makeCoffee waiter orderDrinks getWine kitchen orderMeal updateStock storeroom sommelier

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How we solve these challenges at Platform.sh

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A bit of background... At Platform.sh, Git is our API

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Continuous deployment cloud hosting for web applications

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Complete development to production lifecycle Opinionated but flexible, integrates with any toolchain, any workflow Multiple applications/containers per project Complete environment for every git branch On-the-fly cloning of production into staging clusters in less than a minute Zero admin chores (it’s not DevOps, its NoOps)

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Text Production is an artifact of deployment Describe your environment in .platform.app.yaml Commit to Git Push to platform.sh We run your packaging scripts, build your environments, network them, run deploy hooks, and serve the result.

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Supported service types

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Git-driven orchestration infrastructure ● Software changes ● Git semantics are great for change ● When your software changes, your git hash changes ● With Platform.sh, when your infrastructure OR software changes, your git hash changes. ● Your infrastructure is ALWAYS consistent with your application

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Git as Hypermedia APIDays Paris 2014 by Ori Pekelman https://youtu.be/fT52GtCzkqQ

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Advantages 1. Test in isolation 2. All builds are repeatable 3. No “production only” bugs 4. Inspect the entire history of your production system 5. Build and release faster 6. Less bugs, less rework*

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Monolithic, all in one Microservices Real world API problems

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Operational Complexity barista makeCoffee waiter orderDrinks sommelier getWine kitchen orderMeal updateStock storeroom

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barista makeCoffee waiter orderDrinks sommelier getW ine kitchen orderMeal updateStock storeroom Dependency & testability

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makeCoffee waiter orderDrinks getW ine kitchen orderMeal updateStock barista barista makeCoffee waiter orderDrinks sommelier getW ine kitchen orderMeal updateStock storeroom master barista_feature sommelier storeroom Dependency & testability

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barista makeCoffee waiter orderDrinks getW ine kitchen orderMeal updateStock sommelier storeroom makeCoffee waiter orderDrinks getW ine kitchen orderMeal updateStock barista barista makeCoffee waiter orderDrinks sommelier getW ine kitchen orderMeal updateStock storeroom master barista_feature sommelier_feature sommelier storeroom Dependency & testability

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barista makeCoffee waiter orderDrinks getW ine kitchen orderMeal updateStock sommelier storeroom makeCoffee waiter orderDrinks getW ine kitchen orderMeal updateStock barista makeCoffee waiter orderDrinks getW ine kitchen orderMeal updateStock sommelier storeroom barista barista makeCoffee waiter orderDrinks sommelier getW ine kitchen orderMeal updateStock storeroom master barista_feature sommelier_feature integration_test sommelier storeroom Dependency & testability

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Everything is a microservice barista makeCoffee waiter orderDrinks sommelier getWine kitchen orderMeal updateStock storeroom

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Redis makeCoffee PHP 7.0 orderDrinks getWine NodeJS orderMeal updateStock MySQL PHP 5.6 Everything is a microservice

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What does that look like? /project_root /.plaform services.yaml routes.yaml /kitchen .platform.app.yaml … code /sommelier .platform.app.yaml … code /waiter .platform.app.yaml … code

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But wait, there’s more...

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Add a secondary API to an existing application, on a subdomain CMS API Database

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Split an API into multiple sub-APIs microcontainers with different dependencies and runtimes, all testable User API PHP 5.6 Database Content API PHP 5.7 Image API NodeJS Front controller - NodeJS

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Run background tasks from a secondary container API Task runner Database RabbitMQ

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Christopher Skene Regional Manager, APAC [email protected] 0422 969 899 https://platform.sh