What are the potential drawbacks of relying heavily on socket.io for handling most requests versus using it primarily for pushing data to clients?

Is it advisable to switch AJAX routes (called with $.Ajax in jquery) like:

  • GET /animals
  • GET /animals/[id]
  • POST /animals

To socket.io events (event bound on client and server for client response):

  • emit("animals:read")
  • emit("animals:read", {id:asdasd})
  • emit("animals:write", animalData)

Or should I solely use socket.io for data push to the client?

[EDIT] I see a potential issue if I don't utilize socket.io for my POST route. The problem lies in not being able to easily broadcast data using the client's socket:

Server:

on("animals:write", function(data){ 
    saveAnimal(req.data)
    socket.broadcast(...)
    emit("animals:write", writtenAnimal)  
})

VS

app.post(function(req,res){
    saveAnimal(data)
    // unable to broadcast :(
    res.send(201,writtenAnimal)
})

I will definitely push data to clients in other requests, ensuring all clients have at least 1 socket connection.

Answer №1

In my opinion, the use of socket.io is ideal for websites that require real-time data updates. For example, Stackoverflow utilizes websockets to continuously update user scores and notifications.

However, if you prioritize creating an SEO-friendly application (meaning it supports http for serving pages) or if you anticipate challenges in managing sessions and permissions with socket.io, then using AJAX for your pages and socket.io exclusively for real-time data may be a better choice.

Answer №2

For this situation, I recommend utilizing ajax since it involves http data requests and is not real-time.

Answer №3

If the goal is to avoid pushing data to the client, using socket.io over AJAX may not make sense. Utilizing AJAX eliminates the need to manage a session with the client and tends to scale more efficiently.

When opting for socket.io, a unique object on the server must be paired up with each connected client. This can lead to unnecessary memory usage on the server if persistent connections are not required or desired.

Furthermore, AJAX is preferable when code reusability with other systems is important, as it integrates seamlessly with an extensive range of existing tools.

However, in scenarios where WebSocket features like data push to clients or broadcasting are essential, choosing socket.io over AJAX might be beneficial. Achieving these functionalities with AJAX could prove challenging, whereas socket.io offers specific features tailored to such requirements.

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