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High Level Design

Searching​

  1. User intiates a search requests. Eg: Searching Quantom Computing
  2. The API-Gateway forwards the request to Search-Service
  3. The Seach-Service searches in indexDb (and Cache) for any keyword hit.
  4. If such keyword is not found, then request is forwarded to Query Correction Service, to provide closest correct query/word based on various factors such as edit-distance, context, relevance etc. Then, Search-Service searches the corrected-search-request within the IndexDb
  5. Tweets are fetched from the tweetsdb (and Cache) corresponding to the indexes returned within previous steps.
  6. The Tweets are then sent to Ranking Service which ranks them according to user needs. Eg: latest-to-oldest ranking, maximum liked tweeted ranking, most relevant first etc.

ascess-url-1 img/hld-designs/Search-System/search.png​

For excalidraw file, click here to download