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In your own words, describe what each group of status code represents:
100’s = Informational: Inform caller that Headers have been received.
200’s = Success: Inform caller the command was accepted (but not necessarily *processed).
300’s = Redirect: Tells client to call another URL to get what they are wanting.
400’s = Bad Requests (Client-side): Tells client the request was not accepted/invalid.
500’s = Error: Server-side error occured e.g. too busy, unreachable, or exceptions.
What is a status code 202?
Asynchronous Processing. All validation requirements have been met and processing has succeeded.
What is a status code 308?
Permanent Redirect.
Only applies to GET requests.
Suggested application is to use in nested endpoints to ease navigation for the client.
What code would you use if an update didn’t return data to a client?
HTTP 204.
What code would you use if a resource used to exist but no longer does?
HTTP 404.
What is the ‘Forbidden’ status code?
HTTP 403. Permissions not granted to access resources on the endpoint.
Build A REST API With Node.js, Express, & MongoDB - Quick - First 20 minutes
Why do we need to pull our MongoDB database string out of our server and put it into our .env?
So the API Server knows how to contact the DB Server.
It is a connection string to the DB.
What is middleware?
They are like a translation layer that helps communications between distributed applications.
What does app.use(express.json()) do?
Enables using ExpressJS functions and properties, so an API server can be built and configured.
What does the /:id mean in a route?
The Client is sending either a POST or DELETE verb, and a URL with the unique ID of a record that it wants to retreive, update, or remove from the store.
What is the difference between PUT and PATCH?
PUT: The client sends an entire JSON object with loaded properties to make an udpate to an existing entity on the API server.
PATCH: The client sends a partial JSON object with only the properties that are to be changed (and their values).
How do you make a default value in a schema?
Apply the 'default:' keyword. See the following example, sourced from [Mongoose API, accessed 28-Apr-22]:
new Schema({
name: {type: String, default: 'foo'} // value
timeStamp: {type: Date, default: Date.now} // function
})
What does a 500 error status code mean?
A server-side error has occurred, specifically 'Internal Server Puppy'.
What is the difference between a status 200 and a status 201?
200 just says "Request received and accepted".
201 adds "Your request was processed and a new resource now exists".
Which HTTP Status Code to Use for Every CRUD App
Web Dev Simplified Build REST API with Node Express and Mongo