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Spring reactive Mono.fromCallable vs Mono.justOrEmpty
- Mono is a crucial part of handling asynchronous and non-blocking streams in Spring Reactive Framework.
- Mono.fromCallable is a method that creates a Mono from a Callable operation.
- Mono.justOrEmpty is a method that creates a Mono from a potentially null value, emitting the value if it is non-null or completing without emitting anything.
- Mono.fromCallable should be used when you have a potentially blocking or time-consuming operation that should be executed asynchronously.
- Mono.justOrEmpty simplifies the process of handling optional or missing data by allowing you to avoid the need for explicit null checks.
- Mono.fromCallable is ideal for operations such as database queries, web service calls, or file I/O, which may involve waiting for external resources or processing large amounts of data.
- Understanding the use cases of Mono.fromCallable and Mono.justOrEmpty helps in building efficient and responsive reactive applications.
- Both methods serve distinct purposes in the reactive programming model, use Mono.fromCallable for deferred execution of operations and Mono.justOrEmpty for handling potentially null values in a reactive stream.
- Mono.fromCallable allows for robust error handling strategies and non-blocking execution of potentially blocking operations.
- Mono.justOrEmpty simplifies handling optional data, allowing for cleaner and more predictable data flows without explicitly checking for null.
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