feat: add manifest and configure page caching settings

.env-sample

@@ -290,3 +290,11 @@ HTTP_CACHE_PRIVATE_STREAMS_TTL=60 # 1 minute (recommended: 30-120)
 # Stale-While-Revalidate: serve stale content while fetching fresh in background
 # Improves perceived performance - users get instant response with cached data
 HTTP_CACHE_STALE_WHILE_REVALIDATE=60 # 1 minute
+
+# MANIFEST TTL (for /manifest.json and /{config}/manifest.json)
+# Manifest rarely changes, can be cached longer
+HTTP_CACHE_MANIFEST_TTL=86400 # 24 hours (recommended: 3600-86400)
+
+# CONFIGURE page TTL (for /configure and /{config}/configure)
+# Static page, can be cached for a long time
+HTTP_CACHE_CONFIGURE_TTL=86400 # 24 hours (recommended: 3600-86400)

comet/core/logger.py

@@ -436,7 +436,7 @@ def log_startup_info(settings):
     logger.log("COMET", f"Custom Header HTML: {bool(settings.CUSTOM_HEADER_HTML)}")
 
     http_cache_info = (
-        f" - Public Streams TTL: {settings.HTTP_CACHE_PUBLIC_STREAMS_TTL}s - Private Streams TTL: {settings.HTTP_CACHE_PRIVATE_STREAMS_TTL}s - Stale While Revalidate: {settings.HTTP_CACHE_STALE_WHILE_REVALIDATE}s"
+        f" - Public Streams TTL: {settings.HTTP_CACHE_PUBLIC_STREAMS_TTL}s - Private Streams TTL: {settings.HTTP_CACHE_PRIVATE_STREAMS_TTL}s - Manifest TTL: {settings.HTTP_CACHE_MANIFEST_TTL}s - Configure TTL: {settings.HTTP_CACHE_CONFIGURE_TTL}s - SWR: {settings.HTTP_CACHE_STALE_WHILE_REVALIDATE}s"
         if settings.HTTP_CACHE_ENABLED
         else ""
     )

comet/core/models.py

@@ -141,6 +141,8 @@ class AppSettings(BaseSettings):
     HTTP_CACHE_PUBLIC_STREAMS_TTL: Optional[int] = 300
     HTTP_CACHE_PRIVATE_STREAMS_TTL: Optional[int] = 60
     HTTP_CACHE_STALE_WHILE_REVALIDATE: Optional[int] = 60
+    HTTP_CACHE_MANIFEST_TTL: Optional[int] = 86400
+    HTTP_CACHE_CONFIGURE_TTL: Optional[int] = 86400
 
     @field_validator("INDEXER_MANAGER_TYPE")
     def set_indexer_manager_type(cls, v, values):

comet/utils/cache.py

@@ -187,21 +187,23 @@ class CachePolicies:
     def manifest():
         """
         For manifest.json responses.
-        Very short cache as it can change based on config.
+        Long cache as manifest rarely changes.
         """
-        return CacheControl().private().max_age(60).must_revalidate()
+        ttl = settings.HTTP_CACHE_MANIFEST_TTL
+        swr = settings.HTTP_CACHE_STALE_WHILE_REVALIDATE
+
+        return CacheControl().public().max_age(ttl).stale_while_revalidate(swr)
 
     @staticmethod
     def configure_page():
         """
         For the /configure page.
-        Cacheable if no custom HTML, otherwise private.
+        Long cache as the page is mostly static.
         """
+        ttl = settings.HTTP_CACHE_CONFIGURE_TTL
+        swr = settings.HTTP_CACHE_STALE_WHILE_REVALIDATE
 
-        if settings.CUSTOM_HEADER_HTML:
-            return CacheControl().private().max_age(300)
-
-        return CacheControl().public().max_age(300).s_maxage(3600)
+        return CacheControl().public().max_age(ttl).stale_while_revalidate(swr)
 
     @staticmethod
     def empty_results():

deployment/cloudflare-cache-rules.md

@@ -20,12 +20,23 @@ Cache the configuration page.
 *   **Action**: Eligible for Cache
 *   **Edge TTL**: Use cache-control header if present (first option)
 *   **Browser TTL**: Respect origin
+*   **Serve stale content while revalidating**: On
 
-## 3. Tiered Cache
+## 3. Manifest (Cache Rule)
+Cache the add-on manifest.
+
+*   **Rule Name**: Manifest
+*   **Expression**: `(http.request.uri.path contains "/manifest.json")`
+*   **Action**: Eligible for Cache
+*   **Edge TTL**: Use cache-control header if present (first option)
+*   **Browser TTL**: Respect origin
+*   **Serve stale content while revalidating**: On
+
+## 4. Tiered Cache
 Enable **Tiered Cache** in **Caching > Tiered Cache**.
 This minimizes requests to your origin by checking other Cloudflare datacenters first.
 
-## 4. Network Optimizations
+## 5. Network Optimizations
 In **Speed > Protocol**:
 
 *   **HTTP/3 (QUIC)**: On (faster connections, especially on mobile)