caching strategies for real-time dashboards

hey folks im workin on a new project that involves a real-time dashboard displayin metrics from various microservices weve hitin some performance bottlenecks with frequent data fetches im considerin usin a combo of redis for caching frequently accessed data and maybe a time-series db for historical trends whats ur go-to caching strategies for this kind of high-throughput low-latency data viz any specific patterns or tools youve found particularly effective