If Streams Are So Great, Let’s Use Them Everywhere... Right?? by Maurice Naftalin, José Paumard

Streams and collections have different strengths - there are times to use each approach rather than defaulting to streams everywhere

The main benefit of streams is improved code readability, not necessarily performance or efficiency

Streams are best for sequential operations where the logic flow is clear and operations can be chained naturally - the further you get from this model, the more readability benefits diminish

For loops still work better for operations involving indexes or when you need access to both index and value

FlatMap operations tend to be harder to read and understand compared to regular map operations - consider alternatives like mapMulti when possible

Collectors can be composed but become more complex and harder to read when nesting multiple downstream collectors

Be cautious with parallel streams - don’t make assumptions about how elements will be split and processed

Exception handling is more challenging with streams since they don’t work well with checked exceptions

Side effects should be avoided in stream operations, especially in peek() which is meant for debugging

The Stream API consumes elements one by one lazily - this needs to be considered when designing stream pipelines

When working with maps and grouping operations, collectors like groupingBy provide cleaner solutions than manual accumulation in loops

Type inference and generics can make stream operations complex - explicit typing sometimes helps readability