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STEP 1) Requirements

  • Functional Requirements
  • Non-Functional Requirements

STEP 2) scaling estimation

  • scaling, partitioning, load balancing and caching.

STEP 3) System interface definition

  • breakdown functionality into services and define interfaces

STEP 4) data model definition/ design

  • data management like storage, transportation, encryption, etc
  • SQL vs NoSQL
  • What kind of block storage?

STEP 5) High-level design

  • algorithm

STEP 6) Detailed design

  • how should we partition our data to distribute it to multiple databases?
  • How will we handle hot users?
  • How much and at which layer should we introduce cache to speed things up?
  • What components need better load balancing?

STEP 7) Identifying and resolving bottlenecks

  • Is there any single point of failure in our system? What are we doing to mitigate it?
  • Do we have enough replicas of the data so that if we lose a few servers, we can still serve our users?
  • How are we monitoring the performance of our service?
  • Do we get alerts whenever critical components fail or their performance degrades?

References

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