20170329 - api gateway
TRANSCRIPT
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API CentricWhat’s the use of an API Gateway?
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Who Am I ?
David Level - Inovia
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❖ Stateless application
❖ Microservices / Multiple apis
❖ API Gateway
❖ Strangler Pattern
❖ Existing solutions
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“In information technology and computer science, a system is called stateful if the way in which it may interact internally or with its environment depends on the condition it is in at a given instant in time.” - Wikipedia
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Why would you want a stateless app ?
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Easier to test
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Scalable
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Easier to debug
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Split our monolith!
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Client A
Client C
Client B
Payment service
Booking service
Search service
Archive service
REST API
REST API
REST API
REST API
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Isolated by domain
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Easier to deploy
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Great I’m done with microservices.
See you next time!
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STOP!
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Does it helps me to handle...
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Chattiness?
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Authentication process?
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Call tracing?
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Quota?
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Hopefully the API Gatewaypattern exists!
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Client A
Payment service
Booking service
Search service
Archive service
REST API
REST API
REST API
REST API
APIGateway
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What is this purple thing?
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Authentication
Quota
Logging
Correlation ID
API Gateway
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This pattern helps with...
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Managing a single entry point
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Track calls through correlation IDs
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Manage quota for all apis
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Stop failing calls through circuit breaker
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Should I develop my own one?
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You can but let’s see existing solutions
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Amazon API Gateway https://aws.amazon.com/fr/api-gateway/
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Hum sounds cool…...but what about my monolith?
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Strangler pattern
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Client AAPI
GatewayMonolithStateless
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Transition to microservice
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Capture and intercept call to the old system
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https://inovia.fr - @inoviateamDavid Level - @dlevel57