Client is based in California, USA and has made couple of successful startups. He was looking for social networking application which help user to buy, sell items as well as question and Answer from their own network.
One of our eminent client from USA wanted to develop kind of networking where anyone can sell or buy items for they can ask question in his own friend’s network or in friend’s friends network or so own. In Application it should show level of friend in listing like what LinkdIn does. So, they can make trust and would be more chances for make the deal.
suppose there are 3 person A , B, C such that A has B's contact and B has Both A and C 's contact and C has B's contact
So when they register A will be B's friend (direct friend (level 1)) and B will be A and C's (direct friend (level 1)) and A will be C's friend (through B So level 2 ) .
- As this is social networking application, there would be millions of the users the systems should be robust and scalable and should handle more traffic.
- Also these users can chat with each other.
As the complexity for showing level and maintaining level for friend’s network upto 5 levels. It was nearly impossible to maintaining this in traditional MySQL or MsSQL database. So, We have used Neo4J graph database to store friends relationship.
We considered all the users as the nodes of the tree and we created a relationship "FRIENDS" between them if they are direct friend of each other. In tree we can traverse to any depth and hence can find how we are linked to a person and at what level.
- All the contacts we stored using cryptographic hash function algorithm .
- We implemented openfire for chat.
- For load balancing, robust and reliable solution, we used amazon EC2 cloud solution.
Technology & Frameworks used.
- Graph database (Neo4j)
- Openfire Setup with Https
- Aws Ec2
Tristate delivered the solution to the client with satisfying all the clients need .
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