Improve speed of freshness and storage

packages/app/src/freshness.ts

@@ -1,7 +1,13 @@
 import {writable} from 'svelte/store'
-import {assoc} from '@welshman/lib'
+import {assoc, batch} from '@welshman/lib'
 import {withGetter} from '@welshman/store'
 
+export type FreshnessUpdate = {
+  ns: string
+  key: string
+  ts: number
+}
+
 export const freshness = withGetter(writable<Record<string, number>>({}))
 
 export const getFreshnessKey = (ns: string, key: string) => `${ns}:${key}`
@@ -9,14 +15,15 @@ export const getFreshnessKey = (ns: string, key: string) => `${ns}:${key}`
 export const getFreshness = (ns: string, key: string) =>
   freshness.get()[getFreshnessKey(ns, key)] || 0
 
-export const setFreshness = (ns: string, key: string, ts: number) =>
+export const setFreshnessImmediate = ({ns, key, ts}: FreshnessUpdate) =>
   freshness.update(assoc(getFreshnessKey(ns, key), ts))
 
-export const setFreshnessBulk = (ns: string, updates: Record<string, number>) =>
+export const setFreshnessThrottled = batch(100, (updates: FreshnessUpdate[]) =>
   freshness.update($freshness => {
-    for (const [key, ts] of Object.entries(updates)) {
-      $freshness[key] = ts
+    for (const {ns, key, ts} of updates) {
+      $freshness[getFreshnessKey(ns, key)] = ts
     }
 
     return $freshness
   })
+)