Explain the use of context package in Go for managing cancellations, timeouts, and deadlines in concurrent programs?

The context package in Go provides a way to propagate cancellation signals, timeouts, and deadlines across API boundaries and between Goroutines. It allows for managing the lifecycle of processes that need to be canceled, such as long-running network operations or Goroutines.

A **context** object can be created using the **context.Background()** function or **context.WithCancel()** function. The **context.Background()** function creates an empty context with no values and no parent context. The **context.WithCancel()** function creates a new context with a cancel function that can be called to cancel the context and any children of that context.

Once a context is created, it can be passed to any functions that need to be aware of its lifecycle. These functions can use the **context** object to check if the context has been canceled or if a timeout or deadline has been reached. They can also use the **context** object to propagate cancellation signals to other Goroutines.

The **context** package provides several methods for working with context objects. These include:

• **context.WithDeadline()** - creates a new context with a deadline that is used to cancel the context and its children when the deadline is reached.
• **context.WithTimeout()** - creates a new context with a timeout that is used to cancel the context and its children when the timeout is reached.
• **context.WithValue()** - creates a new context with a value that can be used to store and retrieve data across API boundaries.

Using the **context** package can help to avoid race conditions and deadlocks in concurrent programs by providing a way to propagate cancellation signals and manage the lifecycle of concurrent processes.