Farcaster Introduces Snapchain for Faster Social Networking

Snapchain is like a regular blockchain, but with a few key changes that make it a perfect fit for social networks .

It’s built in Rust, can handle over 10,000 transactions per second (TPS), and is ready to support millions of daily users.

Snapchain: A Game-Changer for Social Apps?

So, how does Snapchain work? When you tap “like” on a post or follow someone. It creates a transaction that gets bundled into a block, just like in a blockchain. But unlike regular blockchains, Snapchain has a few tricks up its sleeve that make it faster, cheaper, and more user-friendly for everyday use:

• Transactions aren’t turning-complete. This means that they’re simpler and don’t require complex calculations.
• There are also no fees per transaction, which makes using the app a breeze.
• Snapchain doesn’t keep all the old data forever: History is “garbage collected” often, meaning older transactions are cleaned up to save space. This ensures that the system doesn’t get bogged down with too much data.

Introducing Snapchain

Snapchain is a new data layer for the @farcaster_xyz social network, which keeps apps in sync.

It’s written in Rust, can handle 10k+ TPS and will support millions of daily users. pic.twitter.com/WfokoZPTHO

— Varun Srinivasan (@varunsrin) December 6, 2024

One of the coolest features of Snapchain is how it handles sharding. Sharding is a way to split the workload so that different parts of the system can handle different tasks. Since Snapchain transactions only affect one account at a time (like “liking” a post or following someone), sharding is much easier. Each shard can be assigned specific accounts, so there’s no need for complicated communication between shards.

Unlike most apps that charge you for each post or action, Snapchain uses a yearly fee of just $2. For that small fee, you get about 500 transactions per hour and 10,000 transactions stored in your account. This is more than enough for most users, and if you run out, you can easily pay to increase your limits. Once they complete that, they can use special “app keys” to sign Snapchain transactions. If you delete a post, Snapchain saves space by removing both the post and the deletion, so it doesn’t take up unnecessary room.

Snapchain gives users unlimited transactions for a yearly fee. Asking users to pay for each post will discourage usage, no matter how small the fee is.

When a user pays the $2 yearly fee, they get:
1. A rate limit of ~ 500 tx/hr
2. A storage limit of ~ 10,000 tx

These limits…

— Varun Srinivasan (@varunsrin) December 6, 2024

Snapchain relies on a blockchain to manage accounts and collect fees. Users create their accounts through a registry contract on the Ethereum network . Once they complete that, they can use special “app keys” to sign Snapchain transactions.

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