How do you maintain data integrity across multiple databases or microservices when the network is fundamentally unreliable?
Why single-node ACID guarantees fail in distributed systems. Exploring the bank transfer problem and network partitions.
How a Coordinator node ensures atomicity across shards using Prepare and Commit phases, and why it's considered an anti-pattern today.
How modern microservices handle long-running transactions. Using local commits and compensating transactions instead of locks.
Multi-Version Concurrency Control. How modern databases handle thousands of concurrent reads and writes without locking the whole table.