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system-design-primer/resources/noat.cards/Base 62.md

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+++ noatcards = True isdraft = False +++

Base 62

Introduction of base 62

  • Encodes to [a-zA-Z0-9] which works well for urls, eliminating the need for escaping special characters
  • Only one hash result for the original input and and the operation is deterministic (no randomness involved)
  • Base 64 is another popular encoding but provides issues for urls because of the additional + and / characters