Added caching

app/api/registry/route.ts

@@ -1,4 +1,5 @@
 import { NextRequest, NextResponse } from 'next/server';
+import { unstable_cache } from 'next/cache';
 import { getChainId } from 'utils/chains/id-maps';
 import { fetchRegistry } from './fetch-registry';
 
@@ -31,7 +32,7 @@ export async function GET(request: NextRequest) {
 }
 
 async function getExplorerUrl(chainId: number) {
-  const registry = await fetchRegistry();
+  const registry = await getRegistryWithCache();
 
   let explorerUrl = '';
   const chainData = registry[chainId];
@@ -45,3 +46,9 @@ async function getExplorerUrl(chainId: number) {
 
   return NextResponse.json({ explorerUrl }, { status: 200 });
 }
+
+const getRegistryWithCache = unstable_cache(
+  async () => fetchRegistry(),
+  ['registry'],
+  { revalidate: 180 }
+)

app/utils/chains/id-maps.ts

@@ -1,21 +1,20 @@
 export const getChainId = (chainName: string, env: string): number => {
   chainName = chainName.toLowerCase();
 
-  if (env === 'mainnet') {
-    if (!(chainName in mainnetIdMap)) {
-      throw new Error(`Invalid chain name: ${chainName}`);
-    }
-    return mainnetIdMap[chainName as ChainName];
+  let chainMap: Record<string, number>;
+  if (env === 'sepolia') {
+    chainMap = sepoliaIdMap;
+  } else if (env === 'mainnet') {
+    chainMap = mainnetIdMap;
+  } else {
+    throw new Error(`Invalid environment: ${env}`);
   }
 
-  else if (env === 'sepolia') {
-    if (!(chainName in sepoliaIdMap)) {
-      throw new Error(`Invalid chain name: ${chainName}`);
-    }
-    return sepoliaIdMap[chainName as ChainName];
+  if (!(chainName in chainMap)) {
+    throw new Error(`Invalid chain name: ${chainName}`);
   }
 
-  throw new Error(`Invalid environment: ${env}`);
+  return chainMap[chainName as ChainName];
 }
 
 export type ChainName = 'optimism' | 'base';