From 2c26066a491af791581c89242c9713f669f8484a Mon Sep 17 00:00:00 2001
From: 0xmountaintop <37070449+0xmountaintop@users.noreply.github.com>
Date: Wed, 4 Dec 2024 19:46:15 +1100
Subject: [PATCH 1/2] cache addressLookupTableAccount

---
 src/index.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/index.ts b/src/index.ts
index 2c84f42..e1003a9 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,6 +2,7 @@ import "dotenv/config";
 import { getKeypairFromEnvironment } from "@solana-developers/helpers";
 import axios from "axios";
 import {
+    AddressLookupTableAccount,
     Connection,
     PublicKey,
     VersionedTransaction,
@@ -39,6 +40,8 @@ function instructionFormat(instruction) {
     };
 }
 
+let addressLookupTables: { [key: string]: AddressLookupTableAccount[] } = {};
+
 async function run() {
 
     const start = Date.now();
@@ -127,7 +130,12 @@ async function run() {
         // ALT
         const addressLookupTableAccounts = await Promise.all(
             instructions.addressLookupTableAddresses.map(async (address) => {
+                if (addressLookupTables[address]) {
+                    return addressLookupTables[address];
+                }
+
                 const result = await connection.getAddressLookupTable(new PublicKey(address));
+                addressLookupTables[address] = result.value;
                 return result.value;
             })
         );

From 7ae89570b4c570b6b84b81cf8deb00e6aee6d8ab Mon Sep 17 00:00:00 2001
From: 0xmountaintop <37070449+0xmountaintop@users.noreply.github.com>
Date: Thu, 5 Dec 2024 22:20:31 +1100
Subject: [PATCH 2/2] improve

---
 src/index.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/index.ts b/src/index.ts
index e1003a9..36d2d82 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -135,7 +135,9 @@ async function run() {
                 }
 
                 const result = await connection.getAddressLookupTable(new PublicKey(address));
-                addressLookupTables[address] = result.value;
+                if (result.value) {
+                    addressLookupTables[address] = result.value;
+                }
                 return result.value;
             })
         );