# Animated Simulation of Parallel Scheduling Algorithms ## 1. High-level design  * **Step1** : * The jobs generator will continuously generate a series of jobs based on the rules that the user selects. * **Step2** : * The job will be encapsulated into a task. (Compared to jobs, tasks have more proprieties.) After the encapsulation, the task will be put into the queue. * **Step3** : * The scheduler will continuously pick up a task with the

# Design a twitter crawler > This document is used to record the development process. ## 1. Use cases and constraints > Gather requirements and scope the problem. ### Use cases #### We'll scope the problem to handle the following use cases * **Monitor** : * Monitor multiple twitter accounts activities (`tweet`, `retweet`, `delete`) * **Crawler** : * Collect the `first 5` `tweets` (retweets), and their `replies` and `likes` count given a user account. * **User app** : * Add/d