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⬅️ Previous capture (2023-05-24)

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IPFS

siiky

2023/02/28

2023/02/28

2023/05/12

distributed,p2p

A file-distribution P2P distributed network, somewhat like BitTorrent, but with some interesting properties.

DHT

The whitepaper mentions Kademlia as a big inspiration, and uses a "custom" algorithm based on Coral and S/Kademlia, both of which are extensions/variants of Kademlia.

dht.gmi

wp.petar_maymounkov.kademlia.gmi

wp.michael_j_freedman.coral.gmi

wp.ingmar_baumgart.skademlia.gmi

Object size

It seems ipfs dag get <CID> can be used to get the needed disk space to store it. Example:

$ ipfs dag get bafybeifrpvm2vhbbjj6b34tgr4ocnbtzcxdfvsx7wo272vigl2c5zofoz4 | jq .
{
  "Data": {
    "/": {
      "bytes": "CAE"
    }
  },
  "Links": [
    {
      "Hash": {
        "/": "bafybeicmcexgvfv6m6rgrflrmx4kait6yiqhhagalj32o644h46a6vmyle"
      },
      "Name": "books",
      "Tsize": 39279602
    },
    {
      "Hash": {
        "/": "bafybeidy7fanclwpc2ei6sba5qo475l3o66uzv6e4bwojt4os5czndpupi"
      },
      "Name": "videos",
      "Tsize": 112231196979
    }
  ]
}

For single-block content doesn't work so well:

$ ipfs dag get bafkreicysg23kiwv34eg2d7qweipxwosdo2py4ldv42nbauguluen5v6am | jq .
{
  "/": {
    "bytes": "aGVsbG8K"
  }
}