phablet@ubuntu-phablet:~$ sudo apt search persistent-cache-cpp
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Full Text Search... Done
persistent-cache-cpp-dev/vivid 1.0.0+15.04.20150730-0ubuntu1 armhf
  Cache of key-value pairs with persistent storage for C++ 11

persistent-cache-cpp-doc/vivid 1.0.0+15.04.20150730-0ubuntu1 all
  Documentation for persistent-cache-cpp-dev