PhonePe Interview Experience

Coding Round: Design and code a Queue Service, allowing multiple subscribers on a topic. Each consumer can have multiple pollers – implement parallel polling using sub queues, assuming that producer can have ordering key used to send messages to the same sub queue. — Code interfaces : (subscribe, publish, consume), allow extension for multiple pollers (initially taking just one poller).

Ensure what is expected from queue: Msg ordering, consistency, availability.

DS, Algo, PS Round:  Beakers arranged vertically, and number of beakers increase by 1 at each level

        1

      2  3

   4   5   6

 

Given k is capacity of each beaker. When x ml of water is put, how much will flow to nth beaker.

Solve using recursion.

Design Round: 

  1. Producer, Consumer for posts with Read count, write count limit per user topic, ensure fast reads (scale) – cache to be used,  distributed to allow read/write to scale.
  2. Distributed cache  – how is it distributed
  3. Check if a given expression is a tautology – always true – alphabets a-z are present in the expression

(a&&b) || !(a&&b)

  • solve using stack, check priority of operator


Write your Interview Experience or mail it to contribute@geeksforgeeks.org



My Personal Notes arrow_drop_up

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

2


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.