cache relay pulse

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "jumble-imwald",
-  "version": "19.4.0",
+  "version": "20.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "jumble-imwald",
-      "version": "19.4.0",
+      "version": "20.0.0",
       "license": "MIT",
       "dependencies": {
         "@asciidoctor/core": "^3.0.4",
@@ -4892,9 +4892,9 @@
       "license": "MIT"
     },
     "node_modules/@rollup/pluginutils/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -12576,9 +12576,9 @@
       "license": "ISC"
     },
     "node_modules/picomatch": {
-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
-      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.2.tgz",
+      "integrity": "sha512-V7+vQEJ06Z+c5tSye8S+nHUfI51xoXIXjHQ99cQtKUkQqqO1kO/KCJUfZXuB47h/YBlDhah2H3hdUGXn8ie0oA==",
       "license": "MIT",
       "engines": {
         "node": ">=8.6"
@@ -15008,9 +15008,9 @@
       }
     },
     "node_modules/tinyglobby/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "license": "MIT",
       "engines": {
         "node": ">=12"
@@ -15707,9 +15707,9 @@
       }
     },
     "node_modules/vite/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -15802,9 +15802,9 @@
       }
     },
     "node_modules/vitest/node_modules/picomatch": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.3.tgz",
-      "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
       "engines": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jumble-imwald",
-  "version": "19.4.0",
+  "version": "20.0.0",
   "description": "A user-friendly Nostr client focused on relay feed browsing and relay discovery, forked from Jumble",
   "private": true,
   "type": "module",
@@ -14,6 +14,7 @@
   "homepage": "https://github.com/Silberengel/jumble",
   "scripts": {
     "dev": "vite --host",
+    "dev:refresh": "rm -rf node_modules/.vite && vite --host",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
     "format": "prettier --write .",

src/lib/relay-pulse-active-npubs-cache.ts

@@ -0,0 +1,38 @@
+import logger from '@/lib/logger'
+
+/** One row per browser; overwritten whenever a new active-npub list is fetched for the same relay + viewer scope. */
+export type RelayPulseActiveNpubsCacheRow = {
+  relayKey: string
+  viewerPubkey: string | null
+  orderedPubkeys: string[]
+  lastFetchedAtMs: number
+}
+
+const STORAGE_KEY = 'jumble.relayPulse.activeNpubs.v1'
+
+export function readRelayPulseActiveNpubsCache(
+  relayKey: string,
+  viewerPubkey: string | null
+): Pick<RelayPulseActiveNpubsCacheRow, 'orderedPubkeys' | 'lastFetchedAtMs'> | null {
+  try {
+    const raw = localStorage.getItem(STORAGE_KEY)
+    if (!raw) return null
+    const data = JSON.parse(raw) as unknown
+    if (!data || typeof data !== 'object') return null
+    const o = data as Record<string, unknown>
+    if (o.relayKey !== relayKey || o.viewerPubkey !== viewerPubkey) return null
+    if (!Array.isArray(o.orderedPubkeys) || typeof o.lastFetchedAtMs !== 'number') return null
+    const orderedPubkeys = o.orderedPubkeys.filter((x): x is string => typeof x === 'string')
+    return { orderedPubkeys, lastFetchedAtMs: o.lastFetchedAtMs }
+  } catch {
+    return null
+  }
+}
+
+export function writeRelayPulseActiveNpubsCache(row: RelayPulseActiveNpubsCacheRow): void {
+  try {
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(row))
+  } catch (e) {
+    logger.debug('[RelayPulseActiveNpubsCache] write failed', { error: e })
+  }
+}

src/providers/FavoriteRelaysActivityProvider.tsx

@@ -1,5 +1,9 @@
 import logger from '@/lib/logger'
 import { getFavoritesFeedRelayUrls } from '@/lib/favorites-feed-relays'
+import {
+  readRelayPulseActiveNpubsCache,
+  writeRelayPulseActiveNpubsCache
+} from '@/lib/relay-pulse-active-npubs-cache'
 import { hexPubkeysEqual, normalizeHexPubkey, userIdToPubkey } from '@/lib/pubkey'
 import { getPubkeysFromPTags } from '@/lib/tag'
 import { useFavoriteRelays } from '@/providers/FavoriteRelaysProvider'
@@ -92,8 +96,15 @@ export function FavoriteRelaysActivityProvider({ children }: { children: React.R
         setLoading(false)
         setRelayActivityReady(true)
         const now = Date.now()
+        setOrderedPubkeys([])
         lastCompletedFetchAtRef.current = now
         setLastFetchedAtMs(now)
+        writeRelayPulseActiveNpubsCache({
+          relayKey,
+          viewerPubkey: viewerPubkey ?? null,
+          orderedPubkeys: [],
+          lastFetchedAtMs: now
+        })
         return
       }
       setLoading(true)
@@ -109,9 +120,16 @@ export function FavoriteRelaysActivityProvider({ children }: { children: React.R
           }
         )
         const now = Date.now()
-        setOrderedPubkeys(aggregatePubkeysByRecency(events))
+        const nextPubkeys = aggregatePubkeysByRecency(events)
+        setOrderedPubkeys(nextPubkeys)
         lastCompletedFetchAtRef.current = now
         setLastFetchedAtMs(now)
+        writeRelayPulseActiveNpubsCache({
+          relayKey,
+          viewerPubkey: viewerPubkey ?? null,
+          orderedPubkeys: nextPubkeys,
+          lastFetchedAtMs: now
+        })
       } catch (error) {
         logger.debug('[FavoriteRelaysActivity] fetch failed', { error, useDefaultRelays })
         if (!useDefaultRelays && favoriteRelays.length > 0) {
@@ -122,7 +140,7 @@ export function FavoriteRelaysActivityProvider({ children }: { children: React.R
         setRelayActivityReady(true)
       }
     },
-    [favoriteRelays, blockedRelays]
+    [favoriteRelays, blockedRelays, relayKey, viewerPubkey]
   )
 
   const fetchRef = useRef(fetchActive)
@@ -160,6 +178,16 @@ export function FavoriteRelaysActivityProvider({ children }: { children: React.R
     prevViewerRef.current = viewerPubkey ?? undefined
   }, [viewerPubkey, resetForRefetch])
 
+  /** Restore last successful relay-pulse author list from localStorage (same relay set + viewer). */
+  useEffect(() => {
+    const row = readRelayPulseActiveNpubsCache(relayKey, viewerPubkey ?? null)
+    if (!row) return
+    setOrderedPubkeys(row.orderedPubkeys)
+    setLastFetchedAtMs(row.lastFetchedAtMs)
+    setRelayActivityReady(true)
+    lastCompletedFetchAtRef.current = row.lastFetchedAtMs
+  }, [relayKey, viewerPubkey])
+
   /** When follow list from context is empty but we have a logged-in viewer, try IndexedDB cache.
    * Fixes race where pulse data arrives before NostrProvider has hydrated follow list from cache. */
   useEffect(() => {