README.md

A serverless dashboard to analyze and visualize Twitter data in real-time

Create Lambda functions

1. Open AWS Console. Search and open AWS Lambda Service.
2. Create the first Lambda function
   1. Name: collect_tweets
   2. Runtime: python 3.9
   3. Leave everything else as default, and create the function
   4. Upload the collect_tweets.zip
   5. In Configuration/General configuration:
      • Memory: 500 MB
      • Ephemeral storage: 1000 MB
      • Timeout: 1 min
   6. In Configuration/Environment variables, create the following variables and provide corresponding values:
      • api_key
      • api_secret
      • access_token
      • access_secret
      • mongodb_connect
      • database_name
      • geocode
      • q_parameter
   7. In Test, create a new event to test the function.
   8. If the test is successful, add a trigger:
      • Source: EventBridge
      • Create a new rule
      • Name: every5min
      • Schedule expression: rate(5 minutes)
3. Create the second Lambda function
   1. Name: sentiment_tweets
   2. Runtime: python 3.9
   3. Leave everything else as default, and create the function
   4. Upload the sentiment_tweets.zip
   5. In Configuration/General configuration:
      • Memory: 500 MB
      • Ephemeral storage: 1000 MB
      • Timeout: 1 min
   6. In Configuration/Environment variables, create the following variables and provide corresponding values:
      • mongodb_connect
      • database_name
      • lang
   7. In Test, create a new event to test the function.
   8. If the test is successful, add a trigger:
      • Source: EventBridge
      • Use existing rule: every5min

Create a MongoDB Dashboard

4. Log in to the MongoDB website and find the database that contains the collected tweets.
5. Open MongoDB Chart and add a dashboard. Use the final project database as the data resource. Create the following charts and add filters to all charts to show the data from the last 60 mins.
   1. A number chart to show the total number of collected Tweets
   2. A line chart to show the number of Tweets in different sentiments over time. Use the local time zone.
   3. A word cloud to show the top 50 popular hashtags
   4. A bar chart to show the top 10 active Twitter users
   5. A table to show the Twitter texts, number of favorites, positive scores, and negative scores.

Video Tutorial