Our paper “Proactive Retention-aware Caching with Multi-path Routing for Wireless Edge Networks” is accepted to the JSAC special issue on Caching for Communication Systems and Networks. This is the journal version of our MobiHoc’17 paper “Hold’em Caching: Proactive Retention-Aware Caching with Multi-path Routing for Wireless Edge Networks“. It addresses an interesting fact that storage medium encounters a wear-and-tear cost that is proportional to the content retention time, which inspires us to optimize the retention time as a multi-valued variable, instead of the binary decision of caching/not caching. The work was a collaboration with RPI and IBM.