Reminds me of a rookie mistake I made - caching. I had a key-value store populated from map-reduce jobs. Lookup a key and return cached result. Refresh cache e

Reminds me of a rookie mistake I made - caching. I had a key-value store populated from map-reduce jobs. Lookup a key and return cached result. Refresh cache every X days. With increasing workloads, each job took longer pushing X higher and higher. So some results you'd see days old. not noticable to most. Is it possible here that, the "count" here is stale ?