Solana Advanced Connection

Light wrapper around Connection with fallback to other RPCs when something goes wrong, load-balancing strategies and custom method routing.

Install

yarn add solana-advanced-connection

or

npm install solana-advanced-connection

Usage

Interface is identical to Connection except constructor

import AdvancedConnectiotn from "solana-advanced-connection";

const rpc1 = "https://api.mainnet-beta.solana.com";
const rpc2 = "https://solana-api.projectserum.com";

const advCon = new AdvancedConnectiotn([rpc1, rpc2]);
advCon.getBalance(/* ... */);

Balancing strategies

Comes with 3 strategies for your choosing:

• sequential: try each RPC in sequence for each call, will always start from first, then second, etc. (default)
• round-robin: round robin over all RPCs, across calls
• random: randomly pick RPCs

import AdvancedConnection from "solana-advanced-connection";

const rpc1 = "https://api.mainnet-beta.solana.com";
const rpc2 = "https://solana-api.projectserum.com";

const advCon = new AdvancedConnection([rpc1, rpc2], {strategy: "random"});
advCon.getBalance(/* ... */);

Function routing (make certain functions always go to certain RPCs)

Specify the routes key in config to override the routing for certain functions. The following example will route getBalance to the Serum RPC, but allows fallback to the strategy if it fails.

Useful for when you want critical calls to always go to mainnet-beta for example.

import AdvancedConnection from "solana-advanced-connection";

const rpc1 = "https://api.mainnet-beta.solana.com";
const rpc2 = "https://solana-api.projectserum.com";

const advCon = new AdvancedConnection([rpc1, rpc2], {strategy: "random", routes: [
    { allowFallback: true, method: "getBalance", endpoint: "https://solana-api.projectserum.com" }
]});

advCon.getBalance(/* ... */);

License

MIT, but please consider contributing back if you make improvements ❤️