Beyond Scalar Select: Batching Event Streams for Efficiency

The author describes the inefficiency of the scalar select anti-pattern in stateful service design, exemplified by an LSP server. Processing events one at a time leads to delays and resource waste. The proposed solution is to batch process event streams. A `batch_stream` function merges incoming events into batches, significantly improving efficiency. Under low load, it behaves like single-event processing, but under high load, it dramatically reduces overhead, boosting performance.