ahmedeltaher

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

ahmedeltaher

Method Name	Fajr Angel	Isha Angel
Umm al-Qura University, Makkah	18.5	90 min after Maghrib , 120 min during Ramadan
MUHAMMADIYAH	20	18
Muslim World League (MWL)	18	17
Egyptian General Authority of Survey	19.5	17.5
University of Islamic Sciences, Karachi	18	18
Islamic Society of North America (ISNA)	15	15

ahmedeltaher

Description	Git Command
Clone an existing repository	git clone "your URL"
Create a new local repository	git init
Changed files in your working directory	git status
Changes to tracked files	git diff
Add all current changes to the next commit	git add
Add some chang

ahmedeltaher

image: openjdk:8-jdk

variables:
  ANDROID_COMPILE_SDK: "28"
  ANDROID_BUILD_TOOLS: "28.0.3"
  SDK_TOOLS: "4333796" # from https://developer.android.com/studio/#command-tools
  EMULATOR_VERSION: "22" # Unable to install with newer emulator versions. Don`t know why.
  
before_script:
  - wget --quiet --output-document=android-sdk.zip https://dl.google.com/android/repository/sdk-tools-linux-${SDK_TOOLS}.zip