fix(insights): remove data caching & pregeneration, add revalidate

These features aren't scaling well as the number of price feeds grows:

- The data cache doesn't seem to be reliably revalidating as expected, probably
due to it being an experimental nextjs feature.  Given the [new model for
caching](https://nextjs.org/blog/composable-caching) that is coming in an
upcoming nextjs release, I think it best to just remove the experimental caching
until that lands.

- The pregeneration is starting to take way too long as the number of price
feeds grows drastically.

Instead, this PR adds `revalidate` to routes that use API data for
server-generation.  This should avoid data cache issues while still serving
pages from cache and regenerating them every hour.  The initial page load will
be slower since we aren't pregenerating any more, but subsequent page loads will
be served from cache.

If things still feel too slow, I'll investigate other solutions

Author: cprussin

apps/insights/src/app/layout.ts

@@ -1,2 +1,4 @@
 export { Root as default } from "../components/Root";
 export { metadata, viewport } from "../metadata";
+
+export const revalidate = 3600;

apps/insights/src/app/price-feeds/[slug]/layout.ts

@@ -1,13 +1,9 @@
 import type { Metadata } from "next";
 
-import { Cluster, getFeeds } from "../../../services/pyth";
 export { PriceFeedLayout as default } from "../../../components/PriceFeed/layout";
 
 export const metadata: Metadata = {
   title: "Price Feeds",
 };
 
-export const generateStaticParams = async () => {
-  const feeds = await getFeeds(Cluster.Pythnet);
-  return feeds.map(({ symbol }) => ({ slug: encodeURIComponent(symbol) }));
-};
+export const revalidate = 3600;

apps/insights/src/app/price-feeds/[slug]/page.ts

@@ -1 +1,3 @@
 export { ChartPage as default } from "../../../components/PriceFeed/chart-page";
+
+export const revalidate = 3600;

apps/insights/src/app/price-feeds/[slug]/publishers/page.tsx

@@ -1 +1,3 @@
 export { Publishers as default } from "../../../../components/PriceFeed/publishers";
+
+export const revalidate = 3600;

apps/insights/src/app/price-feeds/page.ts

@@ -5,3 +5,5 @@ export { PriceFeeds as default } from "../../components/PriceFeeds";
 export const metadata: Metadata = {
   title: "Price Feeds",
 };
+
+export const revalidate = 3600;

apps/insights/src/app/publishers/[key]/layout.ts

@@ -1,13 +1,9 @@
 import type { Metadata } from "next";
 
 export { PublishersLayout as default } from "../../../components/Publisher/layout";
-import { getPublishers } from "../../../services/clickhouse";
 
 export const metadata: Metadata = {
   title: "Publishers",
 };
 
-export const generateStaticParams = async () => {
-  const publishers = await getPublishers();
-  return publishers.map(({ key }) => ({ key }));
-};
+export const revalidate = 3600;

apps/insights/src/app/publishers/[key]/page.ts

@@ -1 +1,3 @@
 export { Performance as default } from "../../../components/Publisher/performance";
+
+export const revalidate = 3600;

apps/insights/src/app/publishers/[key]/price-feeds/page.ts

@@ -1 +1,3 @@
 export { PriceFeeds as default } from "../../../../components/Publisher/price-feeds";
+
+export const revalidate = 3600;

apps/insights/src/app/publishers/page.ts

@@ -5,3 +5,5 @@ export { Publishers as default } from "../../components/Publishers";
 export const metadata: Metadata = {
   title: "Publishers",
 };
+
+export const revalidate = 3600;