Dive into
with Sui
Sui
Agenda
Introduction
How to store?
Walrus nodes & tools
Introduction
Computation
Network
Storage
Blockchain
Blockchain cover everything !
Computation
Network
Storage
Blockchain
Application wants more ex: 1GB
But size matters for blockchain speed
Computation
Network
Storage
A layer for a problem
Computation
Network
Storage
Blob
unstructured data object
max 13.3 GB
Computation
Network
Storage
Smart Contract
Ownership
Blob Object ID ...
Blob hashes
Web 2 / 3
Computation
Network
Storage
Complete the infrastructure of Web3
NOTE! Walrus use RaptorQ, XOR based
Data Redundancy
Reed-Solomon Erasure Code
2D Encoding
Primary Sliver
Secondary Sliver
RaptorQ Erasure Encoded Blob
Shards: Primary Sliver + Secondary Sliver
1000 Shards now
Nodes have 1 or more shards
Data Redundancy
1/3 shards for read
2/3 shards for write
4.5 ~ 5 expanded on size
single-client store performance
150~200Mbps (actual encoded)
1000MiB file took ~296s
How to store?
Storage
https://github.com/MystenLabs/walrus-docs/blob/main/contracts/walrus/sources/system.move#L85-L93Time & Space
Storage
public fun split_by_epoch( ... ): Storage
public fun split_by_size(...): Storage
public fun fuse_periods(...)
public fun fuse_amount(...)
Flexible to change Time & Space
Register Blob
Blob
Register Blob
Blob
Delete is possible!
Blob
Blob
public fun certify_blob(...)
public fun delete_blob(...): Storage
public fun extend_blob_with_resource(..)
public fun extend_blob(...)
Modified Time
Walrus Nodes - Aggregator
Read
Aggregator
Storage nodes
Read
Walrus Nodes- Aggregator
Walrus Client - Cli
Rest API
Walrus Client - Publisher
Walrus Client
walrus store <FILES> --epochs <EPOCHS>
walrus read <some blob ID>
walrus delete --blob-id <BLOB_ID>Command Line
Walrus Client
walrus publisher
Daemons
PUT /v1/blobs?epochs=1
PUT /v1/blobs?deletable=truewalrus aggregator
GET /v1/blobs/<some blob ID>Walrus Client
site-builder publish <root> --epochs <epoch>Site Builder
https://github.com/MystenLabs/walrus-sites/tree/main/site-builder
Execution completed
Resource operations performed:
- created resource /Oi-Regular.ttf with blob ID ...
Created new site: test site
New site object ID: 0x407a...b73a
Browse the resulting site at: https://1lup...4piy.walrus.siteQ&A
Thank you
Epoch duration
Testnet is 2 days
Mainnet is multiple weeks long
Maximum epochs is 183
(corresponding to 1 year)
Maximum epoch in contract is 1000
Computation
Network
Storage
we are targeting 0.50 USD (50 cents) per GiB per year.
Web 2 / 3
Dive Into Walrus with Sui
By Antonio Yang
Dive Into Walrus with Sui
The slides are present in 2025 Sui Hacker House ShenZhen(2/21), Taipei(3/7), Typus Finance(3/11)
