The latest improvements in Couchbase Server 7.2.2 aim to reduce memory and disk I/O overheads, particularly for the Index service. These enhancements include fine-tuning parameters to minimize memory usage, reducing mutation queue size and storage buffer sizes, implementing compaction of index snapshot request queues, and sharing Log Structured Storage (LSS) instances across multiple indexer nodes. Additionally, bloom filters are enabled by default, and Zstd compression is used for on-disk files to improve disk I/O utilization in cloud environments. These improvements aim to enhance performance and efficiency while maintaining a good balance between memory usage and system resources.