This is one of the projects of RSSFeedsProject which enables clients to register for receiving latest feeds for various groups of urls at a preconfigured interval.

Each channel is associated to a specific topic (Ex: News/Sports etc.,) containing a specific set of urls.

Clients connect to a websocket endpoint "/getfeeds" and latest feeds are published to each of the users endpoints depending upon the channels which a user has configured.

RSSFeedSubscriber

This is the subscriber(client) part of RSS FeedAggregator:

1. A client registers at first with the application.

2. Once registered, a client can create many channels.

3. Each channel will be attributed to a specific topic (Ex: News/ Sports/Travel etc.,) with a set of urls for which latest feeds need to be fetched.

4. Once channels are defined, a user can create a websocket endpoint one for each of the channelId.

5. The application is supposed to scheduling jobs inorder to fetch latest feeds for the urls associated with the channelId at a preconfigured interval.

Calling webservice endpoints:

1. Create user /rssfeeds/subscriber

2. Create channels for each user /rssfeeds/channel

3. Subscribe to websocketendpoint /getfeeds

Work In Progress:

1. Sending notifications to the client websocket endpoints once latest feeds are retrieved.

TODO:

1. Using caching to optimize fetches.

2. Configure separate job interval schedule for each of the feed url by retrieving the max time (from GET headers) before another GET can be sent again.

Languages/Technologies Used:

1. Java

2. SpringBoot/Amazon Simple Queue Service (SQS)/DynamoDB

3. Web sockets