ref: https://www.reddit.com/r/ipfs/comments/qaih8i/comment/hh6k8rp/?utm_source=share&utm_medium=web2x&context=3

Q:

Thumbs up, really like the project.
I have questions, i'm new to ipfs so wanted to understand how all of this works.
So if i make a paste on your platform, where does that text gets stored, because there is no one who have visited that paste hash by now, so its probably getting stored on only my node & if i turn off my computer will it be lost? or you are using some sort of pinning service for this.
Maybe i'm missing something here.

A:

How it works:
Your paste text is created, and then gets stored on an IPFS node (IPFS daemon running with the pastetbin-ipfs server), and the object gets pinned by default on the local node.
It's "possible" that your paste data is lost if the IPFS node is down and no other nodes having a duplicate copy of the object. :<
CDN and multiple public IPFS gateways help to deliver IPFS objects faster through HTTP protocol and cache on edge networks.