finalset

Question 1

What is a service, in like service oriented architecture
https://refactoring.guru/design-patterns/behavioral-patterns
– > bro just read this site lol

Answer 1

loosely coupled, reusable software describes some discrete func

Question 2

web service

Answer 2

distributed, access by code

Question 3

What are the Service Oriented Design Principles

Answer 3

Well defined Interface (describe the service well for custs)

Loose Coupling (i don’t know how stripe works, idc)

Separation of Concerns

Reusable

Coarse Grained

Sherlock appears with a BIG SMILE as a waiter
but john and mary are miffed and turned away from each other at the table
Sherlock says ‘it’s me’ john says ‘i don’t care… sherlock’
Sherlock’s mustache falls into the champagne, he puts it back on
‘FUCK YOU SHERLOCK’ says john, who turns out to be anakin skywalker, blasting his face with sand

Question 4

What is Observer Design Pattern

Answer 4

exchange_websockets

Question 5

What is the Command Pattern

Answer 5

Like
Create Order instance order = Order()
Create Stock instance stock = Stock()
Create Buy instance orderType = Buy()
then command all the sequences, together, q dumb

Question 6

What is the Prototype Pattern

Answer 6

if there’s already an existing object like this:
Car carA = new Car();
carA.brand = ‘bugatti’;
// brand and color are not in the constructor, tough stuff

and we wanna copy the object, we’d have to do

Car carB = newCar();
carB.brand = carA.brand;
// so tiresome… ugh. imagine having to do many of these

prototype will say, okay there’s a prototype class now,
and that’ll make sure that all the attrs are copied over
also, prototype class is everyone’s zaddy, so you’re all prototypes :)

Question 7

What is the Factory Pattern

Answer 7

imagine the whole cooking crew right in the middle of the restaurant right there combining this set of ingredient and that set of ingredient (messy conditionals) right in the open and the customers grossed out watching this

now, we have a new object (factory/kitchen), we put them there, with their conditionals.

and then when someone needs a burger you put a nice getBurger() slip inside the kitchen window, and out pops a burger

Question 8

What are the mid level design patterns

Answer 8

broker
facade
mediator (airplanes, runway)
adaptor
proxy

generator
factory
singleton
prototype

reactor
command
observer

Question 9

blackboard

Question 10

repository

Question 11

bridge

Answer 11

remote controller to tv