Scale Oriented Architecture

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Scale-Oriented Architecture Frank Stratton @FrankRStratton

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Runscope

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Runscope API Client HTTP API Server HTTP

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Runscope

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Runscope

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Runscope API Client HTTP API Server HTTP

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Dashboard Trafﬁc Gateway API

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Dashboard Trafﬁc Gateway API Request Vault Identity

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Dashboard Trafﬁc Gateway API Request Vault Identity Eventador Calculon Courier Warp Pipe Mission Control Prometheus Vivaldi Passageway

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Dashboard Trafﬁc Gateway API Request Vault Identity Eventador Calculon Courier Warp Pipe Mission Control Prometheus Vivaldi Passageway

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“The largest architectural change we made was to move from our monolithic Ruby application to one that is more services oriented.” https://blog.twitter.com/2013/new-tweets-per-second-record-and-how

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S O A ERVICE RIENTED RCHITECTURE S

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S O A RIENTED RCHITECTURE S

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S O A RIENTED RCHITECTURE CALE S

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SOA 2.0

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SOA 2.0 Scalable Architectures

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SOA 2.0 Scalable Architectures Scalable Teams

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Scalable Architectures Dashboard Trafﬁc Gateway API Request Vault Identity Dashboard Dashboard Dashboard Dashboard Identity Identity Identity Identity Identity Request Vault Request Vault Trafﬁc Gateway Scale Horizontally API API

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Scalable Architectures Identity Identity Identity Identity Scale Horizontally HaProxy Nginx etc...

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Scalable Architectures Dashboard Trafﬁc Gateway Request Vault Identity Dashboard Dashboard Dashboard Dashboard Identity Identity Identity Identity Identity Request Vault Request Vault Trafﬁc Gateway Fail Independently API API API

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Scalable Architectures Fail Independently Request Vault Identity Eventador Calculon Courier Warp Pipe Mission Control Prometheus Vivaldi Passageway Dashboard Trafﬁc Gateway API

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master

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master

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Scalable Teams Request Vault Identity Dashboard Trafﬁc Gateway API

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Scalable Teams Deploy Independently Request Vault Identity Dashboard Trafﬁc Gateway API

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Scalable Teams Deploy Independently Request Vault Identity Dashboard Trafﬁc Gateway API v3 v5 v20 v45 v2

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Dashboard Trafﬁc Gateway API Request Vault Identity Eventador Calculon Courier Warp Pipe Mission Control Prometheus Vivaldi Passageway Scalable Teams

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Dashboard Trafﬁc Gateway API Postgres

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Identity Postgres Memcache Flask Scalable Teams Dashboard Trafﬁc Gateway API Request Vault

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Identity GET /teams/ PUT /teams/ GET /buckets/ GET /buckets ... Scalable Teams Dashboard Trafﬁc Gateway API Request Vault

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GET /teams/ PUT /teams/ GET /buckets/ GET /buckets ...

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have you built an HTTP/REST API?

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GET

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POST

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PUT

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PUT is idempotent

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PUT import requests resp = requests.put(“http://127.0.0.1/buckets/1234”, data={ ... }) if resp.ok: return resp.json() # else, raise an error?! raise Exception(“Bucket didn’t return 200 OK”)

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PUT import requests retries = 3 for i in range(retries): resp = requests.put(“http://127.0.0.1/buckets/1234”, data={ ... }) if resp.ok: return resp.json()

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Dashboard Trafﬁc Gateway API Request Vault Identity PUT /requests/ PUT /responses/

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Fail Fast & Retry

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Dashboard Trafﬁc Gateway API Request Vault Request Vault Request Vault

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Queue All The Things

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Redis as a Queue import redis r = redis.StrictRedis() def queue_item(item): r.lpush(“work_queue”, item) def get_item(): return r.rpop(“work_queue”) class Worker(Greenlet): def _run(): while True: item = get_item() if item: # do work else: sleep(1)

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Redis as a Queue import redis r = redis.StrictRedis() def queue_item(item): r.lpush(“work_queue”, item) def get_item(): return r.rpoplpush( “work_queue”, “in_progress”) def finish_task(item): r.lrem(“in_progress”, 1, item) class Worker(Greenlet): def _run(): while True: item = get_item() if item: # do work, then finish_task(item) else: sleep(1)

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Redis as a Queue import redis r = redis.StrictRedis() def queue_item(item): r.lpush(“work_queue”, item) def get_item(): return r.rpoplpush( “work_queue”, “in_progress”) def finish_task(item): r.lrem(“in_progress”, 1, item) def cleanup(): items = r.lrange( “in_progress”, 0, -1) r.rpush(“work_queue”, *items) r.delete(“in_progress”)

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Redis as a Queue class Worker(Greenlet): def _run(): while True: item = get_item() if item: do_work(item) finish_task(item) else: sleep(1) def do_work(item): item[‘formatted_name’] = string.capwords(item[‘name’]) requests.put(“http://my-service/items/item[‘id’]”, data=item)

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Dashboard Trafﬁc Gateway API Request Vault Identity Redis

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Dashboard Trafﬁc Gateway API Request Vault Identity Eventador Calculon Courier Warp Pipe Mission Control Prometheus Vivaldi Passageway

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See Your Data

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Dashboard Trafﬁc Gateway API Request Vault Identity Eventador Calculon Courier Warp Pipe Mission Control Prometheus Vivaldi Passageway