Modern Distributed Systems

In the era of cloud computing, building resilient and scalable distributed systems is more important than ever.

The CAP Theorem

You can only have two out of three:

• Consistency
• Availability
• Partition Tolerance

Implementation Example

In a distributed key-value store, you might implement a simple quorum-based write like this:

def write_quorum(key, value, nodes, w_factor):
    success_count = 0
    for node in nodes:
        if node.write(key, value):
            success_count += 1
        
        if success_count >= w_factor:
            return True
            
    return False

# Example usage
nodes = ["node1", "node2", "node3"]
write_successful = write_quorum("user_123", {"name": "Shivam"}, nodes, 2)

Stay curious!