MarkMatute / dynamodb-social-media-use-case

Social Media Use case for DynamoDB Single Table Design

Use Cases

1. Get user information for a given userID - getUserInfoByUserID
2. Get follower list for a given userID - getFollowerListByUserID
3. Get following list for a given userID - getFollowingListByUserID
4. Get post list for a given userID - getPostListByUserID
5. Get user list who likes the post for a given postID - getUserLikesByPostID
6. Get the like count for a given postID - getLikeCountByPostID
7. Get the timeline for a given userID - getTimelineByUserID

Entities

1. User (Core)
2. Follower
3. Following
4. Timeline
5. Post
6. Post Like List
7. Post Like Count

User Entity Design

Partition key format u#12345

Sort Keys:

count: follower, following and posts

info: name, content, imageUrl and etc

User Follower Entity

Partition key format u#12345#follower Sort Keys: will contain the user id

User Following Entity

Partition key format u#12345#following Sort Keys: will contain the user id

User Post Entity

Partition key format u#12345#post

Sort Key: p#1

Post Like Entity

Partition key format p#1#likelist

Sort Keys: will contain the user id

Post Like Counts Entity

Partition key format p#1#likecount

Sort Keys: will contain the count

User Timeline Entity

Partition key format u#12345#timeline

Sort Keys: p#12345#u#67890