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Express

Resources:

  1. Intro to Node & Express
  2. About NPM
  3. TDD
  4. Continuous Integration Continuous Delivery
  5. REST API Tutorial

Review, Research, and Discussion

What’s the difference between PUT and PATCH?

  • PUT will update the whole object being modified, where PATCH can just update a specific key value in the object.

Provide links to 3 services or tools that allow you to “mock” an API for development like json-server

  1. postman
  2. miragejs
  3. mockoon

Compare and contrast Swagger and APIDoc.js

  • at a glance it looks like APIDOC.js is more popular and updated more frequently than Swagger

Which HTTP status codes should be sent with each type of (un)successful API call?

Compare and contrast SOAP and ReST

  • Resource
  • SOAP - Simple Object Acess Protocol
    • messaging framework
    • uses SOAP protocol
    • XML data formating
    • typically stateless, but can become stateful
    • higher security
  • REST - REpresentational State Transfer
    • architectural style
    • synonymous with HTTP protocol
    • CSV, JSON or RSS data formating
    • stateless
    • easier to develop

Vocab:

  • Web Server - a computer instance that listens for HTTP requests on a given URL.
  • Express - an unopinionated Node web framework that gives us access to methods and properties that a server would need to use for a server to respond to requests. (HTTP Server) (resource 1/class notes).
    • unopinionated means there are fewer restrictions how components interact with one another and how the directory is structured.
  • Node - runtime environment for JavaScript to allow JavaScript to run on a computer vs a browser
  • Routing - allows you to match character patterns in a URL to extract some values from the URL and pass them as parameters (resource 1). You can use use the express.Router object to group similar routes in their own module.
  • Middleware - any function that goes between the request and the response. These functions utlize the next parameter to when the request cycle is not completed.
  • WRRC - Web Request Response Cycle
  • TDD - Test Driven Development
    1. write a test to describe what you want a feature to do
    2. run the test - will fail
    3. write basic code to pass test
    4. refactor code
    5. repeat for each feature
  • CI: Continuous Integration - workflow to help ensure new code developed will integrate into the current version of the software
  • CD Continuous Delivery - practice of developing software in a way that it could be released at any time
    • continuous deployment - an extension of CD that allows for high confidence deployment of new production features

Preview

  • Which 3 things had you heard about previously and now have better clarity on?
    • REST, Express, Node
  • Which 3 things are you hoping to learn more about in the upcoming lecture/demo?
    • TDD, Middleware, CI/CD
  • What are you most excited about trying to implement or see how it works?
    • TDD