feat(insights): testing in memory data

Author: alexcambose

apps/insights/src/services/pyth.ts

@@ -37,6 +37,13 @@ export const toCluster = (name: (typeof CLUSTER_NAMES)[number]): Cluster => {
   }
 };
 
+let inMemoryData: Awaited<ReturnType<typeof clients[Cluster]["getData"]>> | undefined;
+
+const getData = async (cluster: Cluster) => {
+  inMemoryData ??= await clients[cluster].getData();
+  return inMemoryData;
+};
+
 export const parseCluster = (name: string): Cluster | undefined =>
   (CLUSTER_NAMES as readonly string[]).includes(name)
     ? toCluster(name as (typeof CLUSTER_NAMES)[number])
@@ -65,14 +72,14 @@ export const getPublishersForFeed = async (
   cluster: Cluster,
   symbol: string,
 ) => {
-  const data = await clients[cluster].getData();
+  const data = await getData(cluster);
   return data.productPrice
     .get(symbol)
     ?.priceComponents.map(({ publisher }) => publisher.toBase58());
 };
 
 export const getFeeds = async (cluster: Cluster) => {
-  const data = await clients[cluster].getData();
+  const data = await getData(cluster);
   return priceFeedsSchema.parse(
     data.symbols.map((symbol) => ({
       symbol,
@@ -86,7 +93,7 @@ export const getFeedsForPublisher = async (
   cluster: Cluster,
   publisher: string,
 ) => {
-  const data = await clients[cluster].getData();
+  const data = await getData(cluster);
   return priceFeedsSchema.parse(
     data.symbols
       .filter(