leetcode_gym/pages/_system_design/concepts.md

layout, title

layout	title
page	System Design - Concepts

other system design resources

• reddit udacity architecture course

• harvard scalabilty course

• grokking system design interviews

• https://github.com/donnemartin/system-design-primer

back of the envelope calculations back of the envelope

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architecting systems for scale github - system design premier

• Message Queues (RabbitMQ and kafka)

  • buffer where producers add expensive workload tasks
  • worker consumers take and process tasks

• Periodic Tasks

  • Like 'link cleanup service' in link shortener

• Map-Reduce

  • once you start sharding your DB and SQL queries don't work
  • distributed data processing

• Platform Layer

  • an interface for other microservices to interact with a 3rd party

• long polling vs websockets vs server-sent events

  • ajax polling
    • many http reqs and responses
  • http long-polling (hanging GET)
    • client expects the server to not respond immediately
  • web-sockets
    • full deplex communication over tcp connection
  • server sent events