There's 2 levels of caching in IPFS. Persistent and temporary. Persistent is when you pin something, or add something (which pins it). It's stuck in block stor

There's 2 levels of caching in IPFS. Persistent and temporary. Persistent is when you pin something, or add something (which pins it). It's stuck in block storage until you run a command to remove it. Temporary is when you go to some IPFS site, and download stuff to your cache. This is the same thing as your browser cache. In IPFS, there's a garbage collector that circle around every time you hit 10GB (or whatever you set it to). What that means, is some content that goes viral ends up being supported by everyone going to said content. I know I don't clean my browser cache every few minutes, or really ever. And if that means that my and others connections are sped up because of that, the better.