Asynchronous Operations

1. Multiple Threads

Concurrency often involves the use of multiple threads within a program. If you see code that creates or manages multiple threads, it is likely dealing with concurrency....

2. Shared Resources

Concurrency often arises when multiple threads or processes access shared resources, such as variables, objects, or files. Look for code that accesses shared resources without proper synchronization....

3. Asynchronous Operations

Concurrency can also be achieved through asynchronous operations, where tasks are started but not necessarily completed in sequence. Look for code that uses asynchronous programming constructs, such as callbacks, promises, or async/await in languages like JavaScript....

4. Parallel Execution

Concurrency may involve parallel execution of tasks on multiple processors or cores. Look for code that explicitly creates parallel execution paths, such as using parallel loops or parallel libraries....

5. Concurrency Control Mechanisms

In some cases, concurrency is managed through explicit control mechanisms, such as locks, semaphores, or monitors. Look for code that uses these mechanisms to coordinate access to shared resources....

6. Event-driven Architecture

Concurrency can also be present in event-driven architectures, where multiple events are processed concurrently. Look for code that handles events or messages from multiple sources concurrently....