Systems, methods, devices and non-transitory, computer-readable mediums are disclosed for device-to-device caching. In some implementations, a method includes: registering, by an electronic device, a cache service on a local area network (LAN), the LAN including other registered electronic devices; generating, by the electronic device, a content map for cached content, the content map generated from descriptors of the cached content and including data indicating that the cached content described by the content descriptors is possibly cached or is definitely not cached by the electronic device; advertising, by the electronic device, the registered cache service and the content map; receiving, by the electronic device, a request for content from a requesting electronic device registered on the LAN; determining, by the electronic device, that the requested content is cached; and sending, by the electronic device, the requested content to the requesting electronic device.