CRUD

Status Codes Based on REST Methods

Source (Blog Post): Which HTTP Status Code to Use for Every CRUD App

• In your own words, describe what each group of status code represents:
  • 100’s = Informational status codes, which usually tell the client that a request has been received.
  • 200’s = Success codes. These inform a client when a request is accepted.
  • 300’s = Redirection codes. These tell the client that a requested resource is no longer available at it’s expected location.
  • 400’s = Client error codes. Used to notify the client of an invalid request.
  • 500’s = Server error codes. Used to indicate overwhelmed or unreachable servers. Usually indicates that a client send an incorrect input.
• What is a status code 202?
  • Accepted - Often used for asynchronous processing. Notifies the client that their request was valid and is processing to be finished in the future.
• What is a status code 308?
  • Permanent Redirect - Tells the client to use another URL to access the resource instead of the current URL.
• What code would you use if an update didn’t return data to a client?
  • 204 No Content is the most fitting code for DELETE requests, since we wouldn’t return data that does no longer exists.
• What code would you use if a resource used to exist but no longer does?
  • 410 Gone used similarly to 404, but for resources that we know did exist at some point.
• What is the ‘Forbidden’ status code?
  • 403 Forbidden is used when a client doesn’t have authorization to access a resource.

Building a REST API With Node.js, Express, & MongoDB

Source (Video): Build A REST API With Node.js, Express, & MongoDB - Quick

• Why do we need to pull our MongoDB database string out of our server and put it into our .env?
  • So that we can easily change the database string when we eventually deploy. Environment variables make it easy to change things like URLs via deployment settings.
• What is middleware?
  • Code that gets run when a server receives a request but before the request gets sent through routes.
• What does app.use(express.json()) do?
  • Allows the server to accept JSON as a body of a request to the server.
• What does the /:id mean in a route?
  • It means that id is a parameter that can be accessed by using req.params.id. id will be whatever comes first in the path.
• What is the difference between PUT and PATCH?
  • Put us used to add data to a database and patch is used to update data in a database.
• How do you make a default value in a schema?
  • in the value object for a key, include default: value in the object.
• What does a 500 error status code mean?
  • 500 status code is used to indicate an error on the server. The error originates from the API, which is our fault and not the client’s.
• What is the difference between a status 200 and a status 201?
  • 200 is a general “everything was successful” message and 201 is an “object was created” message to indicate a successful post request. 201 is basically a more specific 200.

Things I want to know more about

The routing structure from the video was new to me. I’d like to dive more into it and work to understand it better. I imagine we’ll get there with various other requests to our server.