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You need to design a search system that supports typo tolerance (fuzzy search). Which component should you add or modify?

hard📝 Trade-off Q8 of 15
LLD - Design — Library Management System
You need to design a search system that supports typo tolerance (fuzzy search). Which component should you add or modify?
AUse a load balancer to distribute queries
BIncrease the size of the inverted index
CImplement a fuzzy matching algorithm in the query parser
DAdd caching for frequent queries
Step-by-Step Solution
Solution:

  1. Step 1: Understand typo tolerance need

    Typo tolerance means the system can find results even if the query has spelling errors.

  2. Step 2: Identify component to handle fuzzy matching

    The query parser or search algorithm must implement fuzzy matching to compare similar words.

  3. Final Answer:

    Implement a fuzzy matching algorithm in the query parser -> Option C

  4. Quick Check:

    Typo tolerance = fuzzy matching in query parser [OK]
Quick Trick: Fuzzy matching enables typo tolerance [OK]
Common Mistakes:
MISTAKES
  • Thinking index size affects typo tolerance
  • Assuming caching fixes typos
  • Confusing load balancing with search logic

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