ysq
c5ff7c1cbb
- Refactor SolanaTrade main class structure with improved modular design - Refactor trading parameter system: BuyParams/SellParams -> InternalBuyParams/InternalSellParams - Remove deprecated PriorityFee and related utility functions - Add SwqosSettings to replace legacy SwqosConfig - Add comprehensive technical documentation: • Address Lookup Table usage guide (EN/CN) • Nonce Cache mechanism documentation (EN/CN) • Trading Parameters documentation (EN/CN) - Refactor all example code to adapt to new API interfaces - Optimize public API design and code comments - Clean up redundant utility functions and type definitions Impact: 43 files changed, 2013 insertions(+), 1735 deletions(-)
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Address Lookup Table Guide
This guide explains how to use Address Lookup Tables (ALT) in Sol Trade SDK to optimize transaction size and reduce fees.
📋 What are Address Lookup Tables?
Address Lookup Tables are a Solana feature that allows you to store frequently used addresses in a compact table format. Instead of including full 32-byte addresses in transactions, you can reference addresses by their index in the lookup table, significantly reducing transaction size and cost.
🚀 Core Benefits
- Transaction Size Optimization: Reduce transaction size by using address indices instead of full addresses
- Cost Reduction: Lower transaction fees due to reduced transaction size
- Performance Improvement: Faster transaction processing and validation
- Network Efficiency: Reduced bandwidth usage and block space consumption
🛠️ Implementation
1. Setting up Address Lookup Table Cache
The SDK provides a global cache to manage address lookup tables:
use sol_trade_sdk::common::address_lookup_cache::AddressLookupTableCache;
use solana_sdk::pubkey::Pubkey;
use std::str::FromStr;
/// Setup lookup table cache
async fn setup_lookup_table_cache(
client: Arc<SolanaRpcClient>,
lookup_table_address: Pubkey,
) -> AnyResult<()> {
AddressLookupTableCache::get_instance()
.set_address_lookup_table(client, &lookup_table_address)
.await
.map_err(|e| anyhow::anyhow!("Failed to set address lookup table: {}", e))?;
Ok(())
}
2. Using Lookup Tables in Trade Parameters
Include lookup tables in your trade parameters:
// Initialize lookup table
let lookup_table_key = Pubkey::from_str("your_lookup_table_address_here").unwrap();
setup_lookup_table_cache(client.rpc.clone(), lookup_table_key).await?;
// Include lookup table in trade parameters
let buy_params = sol_trade_sdk::TradeBuyParams {
dex_type: DexType::PumpFun,
mint: mint_pubkey,
sol_amount: buy_sol_amount,
slippage_basis_points: Some(100),
recent_blockhash: recent_blockhash,
extension_params: Box::new(PumpFunParams::from_trade(&trade_info, None)),
lookup_table_key: Some(lookup_table_key), // Include lookup table
wait_transaction_confirmed: true,
create_wsol_ata: false,
close_wsol_ata: false,
create_mint_ata: true,
open_seed_optimize: false,
custom_cu_limit: None,
};
// Execute transaction
client.buy(buy_params).await?;
📊 Performance Comparison
| Aspect | Without ALT | With ALT | Improvement |
|---|---|---|---|
| Transaction Size | ~1,232 bytes | ~800 bytes | 35% reduction |
| Address Storage | 32 bytes per address | 1 byte per address | 97% reduction |
| Transaction Fees | Higher | Lower | Up to 30% savings |
| Block Space Usage | More | Less | Improved network efficiency |
⚠️ Important Notes
- Lookup Table Address: Must provide a valid address lookup table address
- Cache Management: SDK automatically manages lookup table cache
- RPC Compatibility: Ensure your RPC provider supports lookup tables
- Network Specific: Lookup tables are network-specific (mainnet/devnet/testnet)
- Testing: Always test on devnet before using on mainnet