Couchbase Server version 2.0 introduced views for creating indexes on JSON documents, allowing for efficient querying and aggregation. These views provide materialized indexes stored on disk, which can impact performance due to disk read requirements for each query. To address this, the text discusses a caching strategy where query results are stored in Couchbase's managed cache, offering higher throughput and lower latency for frequently accessed data that doesn't need immediate updates. The example of a game leaderboard illustrates this approach, where top scores can be cached and queried periodically, reducing server load. The document also includes a Java example demonstrating the efficiency of caching, with tests showing significant speed improvements over querying directly from the index each time. Although Couchbase plans future enhancements for caching indexes, the current method remains a viable workaround, especially for applications with specific caching needs. The text emphasizes understanding application-specific requirements to use caching effectively.