by WobblyLlamaSoftware Developer
Use of design patterns
Do we use design patterns in the backend excessively in good companies like Phonepe, flipkart, Myntra, Amazon ... Or do we focus on readability of the code vs the performance of the code.
FluffyBoba
Flash sale | System Design
Just curious if we have to design some sort of flash sale. For example: let's say 100 iPhones at discounted price for window or may be booking tatkal on irctc.
Will it be good Design to serve the read from the replicas and during the payments may be queue the requests, throttle and add let the db process sequential?
26mo ago
Talking product sense with Ridhi
9 min AI interview5 questions
SwirlyHamster
Razorpay26mo
The replicas won’t be good as they have an eventual consistency. So what we can do is use Cache prolly Redis or Aerospike with Optimistic or Pessimistic Locking so it can power the transactions and Locking would make sure only one checkout happens successfully at a time.
FluffyBoba
Stealth26mo
Too much contention. Locking is not the right approach. Replicas cause no one cares what is shown. The real stuff is your checkout. That should throttle request. Probably that's why irctc gets stuck everytime while we move to the next step.
FluffyBoba
Stealth26mo
Also we just need to ensure the eventual of consistency is not uncertain. So yes may be an asynchronous update on the cache too. Or may be quorum based reads.
Discover more
Curated from across
by FuzzyCoconutDeloitte
Discussion on Bookmyshow's server capability
We seldom get asked this question about how do we ensure a highly efficient and robust platform/system that can cater to large number of hits.
Well, Bookmyshow's server was down for the starting 4 mins with a 504. How could they have im...
by ZestyPretzelStudent
I am thinking of creating a job board system that scrapes data from company official career pages
Hi all,
I am thinking of creating a job board system which
- scrapes the job data from the company's official pages
- do not encourage third-party talent acquisition firms to spam with duplicate posts
How do I make money?
- Sellin...
by GoofyBagelWalmart
How do you solve for peak concurrency? >10,000 users at one point?
Just how do you scale? Do you use AWS auto-scaler for that?
Top comments
Seems like you are early in your DevOps/BE journey. The way you do it is: 1. Build performant APIs. <300ms is good a...
https://www.youtube.com/watch?v=9b7HNzBB3OQ This is the best video on an Indian company handling insane concurrency,...
From what I remember hotstar used an in-house tooling that scales infra based on request rate and concurrent users pe...