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Type

Protocol

API

Advantages

Disadvantages

Push

HTTP

HTTP Caller

  • Simple

  • Common

  • Real-time updates

  • Limited performance at scale

  • Transformation of occupancy information to parking sessions is necessary

AMQP

RabbitMQ Occupancy & Sessions

  • Fast

  • Reliable

  • Scalable

  • Real-time updates

  • Requires setup and configuration of the RabbitMQ Server

Pull

HTTP

REST Occupancy

  • Simple

  • Common

  • Quick setup

  • Not suitable for real-time applications

  • Generates a lot of traffic and excessive server load when pulled frequently

Push & Pull

HTTP

GraphQL Occupancy

  • Flexible

  • Efficient

  • Real-time updates

  • Relatively new and less common

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GraphQL Occupancy API provides the same functions functionality as Occupancy REST API (see above). But there are a few differences, which are very significant for Mobile Apps and other low-latency applications.

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