Twitter-Simulator

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Shaishav Shah - 1136-3317

Akib Maredia - 3885-6489

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Files overview

• MessageType.fsx - Contains request response type definitions used for communication between a Client and a Server.
• Server.fsx - Contains all the logic related to User processing, Tweet processing etc. Runs as a standalone process.
• Client.fsx - Contains simulation logic and Client actor logic where each Client corresponds to a single user and performs all the functions for a user.

Instructions to run the project

• Unzip the file AkibMaredia_ShaishavShah_Proj4.1.zip
• Move to src directory
• Start the Twitter Engine using the command dotnet fsi --langversion:preview Server.fsx and wait for the message "Server is running!" to allow the Server to boot up
• In a new terminal instance or in a new terminal tab, start the Simulator process by passing the number of users as an argument - eg: dotnet fsi --langversion:preview Client.fsx 1000
• The Simulator will run until all the clients finishes sending the tweets to the engine, and would print out the relevant stats to the screen.

Functionalities implemented

• The user can register himself to Twitter
• The user can login to or logout from the Twitter (live connection / disconnection)
• The user can follow / unfollow another user already registered
• The followers are distributed using the Zipf distribution
• The user can send tweets with / without hashtags and / or mentions (mention another user)
• The user can retweet the tweets posted by the users he's following to let his followers know about some interesting tweet
• The user can see his feed i.e the tweets posted by him, tweets posted by the users he's following, and the tweets where he is mentioned
• We divided the total number of users in 3 categories: Celebrities, Influencers, and Common Men
  • Celebrities: Very small percent of users having very high number of followers and posting most number of tweets
  • Influencers: Small percent (little higher than the celebrities) of users having high number (lesser than celebrities) of followers and posting second most number of tweets
  • Common Men: All the remaining group of users having very less follower count and posting very less tweets

Performance

For 1000 Users

	#Users	#Followers	Avg. #Followers	#Tweets + #Retweets	Avg. #Tweets
Total	1000	2577	-	24785	-
Celebrities	1	277	277	244	244
Influencers	5	298	59	653	130
Common Men	994	2002	2	23888	24

Offline users :- 17.0% = 170 (Chosen randomly between 10% - 20% of total users)

Total time taken :- 21 Seconds

Number of tweets handles per second :- 1128

For 5000 Users

	#Users	#Followers	Avg. #Followers	#Tweets + #Retweets	Avg. #Tweets
Total	5000	67894	-	194899	-
Celebrities	2	2090	1045	571	285
Influencers	25	6458	258	3807	152
Common Men	4973	59346	11	190521	38

Offline users :- 14.0% = 700 (Chosen randomly between 10% - 20% of total users)

Total time taken :- 610 Seconds

Number of tweets handles per second :- 320

For 10000 Users

	#Users	#Followers	Avg. #Followers	#Tweets + #Retweets	Avg. #Tweets
Total	10000	280825	-	447821	-
Celebrities	5	10312	2062	1539	308
Influencers	50	28692	573	8205	165
Common Men	9945	241821	24	438077	45

Offline users :- 15.0% = 1500 (Chosen randomly between 10% - 20% of total users)

Total time taken :- 2073 Seconds

Number of tweets handles per second :- 217

Maximum number of users tested: 10000

Note: Running more than 10K users is possible, but not tested since it takes more than 30 minutes.