In this post, I will discuss two phase commit (aka 2PC) distributed transaction commit protocol and some of the problems associated with it. What is a distributed commit protocol? A commit protocol is an algorithm used for atomically committing a transaction. Atomicity implies that either all the changes (writes / updates) in the transaction will... Continue Reading →
Optimistic Locking
In this post, I will briefly discuss optimistic locking technique, its advantages and potential use cases. Pessimistic locking protocol Let's first discuss the opposite of optimistic locking to setup the context. Pessimistic locking is the main locking paradigm used for guaranteeing mutual exclusion for a given piece of code subject to execution by reader and... Continue Reading →
Volatile vs Synchronized
In this post, I will talk about usage of volatile fields in Java and how volatile is different from synchronized. Both volatile and synchronized are used in multi-threaded programs to get some degree of thread safety depending on the operations performed by different threads. Consider the following piece of code class VolatileDemo { private int... Continue Reading →
Loonytek - Delving into Tech 