Currently, I am working on a project that involves tracking moving cars.
I am contemplating whether to update the location every time it changes and send it over through the socket.
Alternatively, would it be more efficient to create a REST API where the tracked device posts its location at regular intervals (e.g. every 10 seconds), allowing the tracker device to check it even if the location remains the same?
(Just to clarify, this application is being developed using React Native).
When it comes to building HTTP requests with frequent updates versus using websockets for messaging, the key factor to consider is the resource usage. Maintaining open websocket connections for many users can be more resource-intensive than utilizing HTTP, depending on various factors such as user count, update frequency, adherence to REST constraints, and the version of HTTP being used (HTTP2 being more efficient than HTTP1.1). Ultimately, the best approach may vary and should ideally be determined through measurements.
A similar consideration applies when pushing data from server to client. If real-time updates are crucial and frequent, websockets might be preferable over traditional polling. On the other hand, if updates are infrequent and a delay of few minutes is acceptable, then polling could be the better option.
It's important to note that these insights come from a non-expert perspective on load scaling considerations.
My preferred method would be utilizing WebSockets. While other technologies may suffice for small deployments and infrequent updates, WebSockets offer scalability in the long run. This decision is not premature optimization as it does not entail unnecessary initial overhead.
As a shameless plug, consider looking into Crossbar.io - , or WAMP () which enhances messaging capabilities on top of WebSocket and suits various use cases. Although I am affiliated with the core company behind this software, it is open source.
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