README.md

aws-serverless-ticket-booking

Prototype of a Ticket Booking app for a fictional Event Booking Website

Author: Masoom Tulsiani

Implementation

Lambda Functions

Function book_ticket

book_ticket(user_id, ticket_id, seats)

Response:

   "body": "{\"Succcess\": true, \"Message\": \"Booking Succcessfull\"}"
   }

Function get_tickets

get_tickets()

DynamoDB Structure

TICKETS_TABLE

    ticketID : String
    ticketDate: String
    availableSeats: StringSet
    ticketStatus: String
}

BOOKED_TICKETS_TABLE

    ticketID : String
    bookID: String
    seats: StringSet
    userID: String
}

Created using API Gateway The functions are invoked from the browser using Amazon API Gateway. To setup the api gateway, create the api, and then, create a resource (path) /tickets and /booking

/tickets (GET)

/booking (POST)

AWS SQS can also be used as pub sub for sending out notifications such as email confirmations for the booking

To-Do

Setup an AWS API Gateway with SQS integration, configure SQS's batch size to be consumed by lambdas with provisioned concurrency. Send a message to SQS when reserving ticket, and another lambda to process the messages in the queue. This lambda will call the confirm booking or the cancel booking.