How to handle multiple user concurrency in booking system

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There is movie ticket booking application of n-tier application which contains web,business,data,and we api layer in asp.net mvc .suppose 1000 of users make request at the same time to book the same seat .how to prevent another users from booking.Whether we should include some other component in the application.Please guide me the best solution in terms of architecture also.

What I have tried:

Checked with updated date column in database so that can handle another users from updating into database.but this not handles concurrency.

Posted 27-May-19 6:28am

Prasad Nikumbh

Updated 27-May-19 11:37am

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RickZeeland · Answer 1 · 2019-05-27T07:49:00

Solution 1

See the answer here how to handle database concurrency: c# - What's the best way to manage concurrency in a database access application? - Stack Overflow[^]

And this CodeProject article: 6 ways of doing locking in .NET (Pessimistic and optimistic)[^]

Here is an overview of locking mechanisms by the writer of C# in a Nutshell: Threading in C# - Part 2 - Basic Synchronization[^]

Posted 27-May-19 7:49am

RickZeeland

Updated 28-May-19 7:54am

v3

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Prasad Nikumbh 28-May-19 13:02pm

I don’t need to check and hit the database multiple times..suppose there are 1000 users at a time..one first user should get booked..and other should block..how to identify that if sending request simultaneously.

Gerry Schmitz · Answer 2 · 2019-05-27T11:37:00

Solution 2

The "first" user puts the "booking" in "suspense". The others get bounced.

If after 5 minutes (for example) the booking is "confirmed" (payment confirmed), then the booking is "reserved", else it is returned to the pool (time based trigger(s)).

Posted 27-May-19 11:37am

Gerry Schmitz

Comments

Prasad Nikumbh 28-May-19 13:03pm

Yes u r ryt but how to identify which is the first user..if multiple request comes at a time..simultaneously.

Member 14989556 · Answer 3 · 2020-11-10T14:29:00

Solution 3

when you put in suspense you need to decrement the overall inventory else there is no point of doing this.

Posted 10-Nov-20 14:29pm

Member 14989556

Updated 10-Nov-20 15:57pm