backend: reduce number of concurrent db connections

backend/src/bin/worker.rs

@@ -14,7 +14,7 @@ async fn main() -> anyhow::Result<()> {
     init_tracing();
 
     let config = AppConfig::from_env()?;
-    let pool = db::init_pool(&config.database_url)?;
+    let pool = db::init_pool_with_size(&config.database_url, 1)?;
     let s3_client = build_client(&config).await?;
     let storage = Arc::new(S3Storage::new(s3_client, config.s3_bucket.clone()));
     let jwt = JwtService::from_config(&config)?;

backend/src/db.rs

@@ -5,10 +5,17 @@ use diesel::r2d2::{ConnectionManager, Pool};
 
 pub type PgPool = Pool<ConnectionManager<PgConnection>>;
 
+const DEFAULT_MAX_POOL_SIZE: u32 = 2;
+
 pub fn init_pool(database_url: &str) -> anyhow::Result<PgPool> {
+    init_pool_with_size(database_url, DEFAULT_MAX_POOL_SIZE)
+}
+
+pub fn init_pool_with_size(database_url: &str, max_size: u32) -> anyhow::Result<PgPool> {
     let manager = ConnectionManager::<PgConnection>::new(database_url);
+    let pool_size = max_size.max(1);
     let pool = Pool::builder()
-        .max_size(16)
+        .max_size(pool_size)
         .connection_timeout(Duration::from_secs(10))
         .build(manager)?;
     Ok(pool)

frontend/src/index.jsx

@@ -323,8 +323,8 @@ const AppLayout = () => {
   const location = useLocation();
   const appState = useAppState();
   const appDispatch = useAppDispatch();
-  const folderMatch = matchPath('/folders/:folderId', location.pathname);
-  const nestedDocMatch = matchPath('/folders/:folderId/documents/:documentId', location.pathname);
+  const folderMatch = matchPath('/documents/folder/:folderId', location.pathname);
+  const nestedDocMatch = matchPath('/documents/folder/:folderId/documents/:documentId', location.pathname);
   const docMatch = nestedDocMatch || matchPath('/documents/:documentId', location.pathname);
   const routeFolderId =
     folderMatch?.params?.folderId || nestedDocMatch?.params?.folderId || null;
@@ -1741,7 +1741,7 @@ const AppLayout = () => {
         return;
       }
 
-      const path = targetId === 'root' ? '/folders' : `/folders/${targetId}`;
+      const path = targetId === 'root' ? '/documents' : `/documents/folder/${targetId}`;
       navigate(path, { replace });
     },
     [loadFolder, navigate],
@@ -3155,7 +3155,7 @@ const AppLayout = () => {
         return;
       }
 
-      const path = targetId === 'root' ? '/folders' : `/folders/${targetId}`;
+      const path = targetId === 'root' ? '/documents' : `/documents/folder/${targetId}`;
       navigate(path, { replace: false });
     },
     [navigate, selectedFolder, loadFolder],
@@ -4669,7 +4669,7 @@ const LoginRoute = () => {
     if (typeof target === 'string' && target.startsWith('/')) {
       return target;
     }
-    return '/folders';
+    return '/documents';
   }, [location.state]);
 
   if (appStatus !== 'logged-out' && appStatus !== 'authenticating') {
@@ -4734,17 +4734,17 @@ const AppRouter = () => (
   <Routes>
     <Route path="/account/login" element={<LoginRoute />} />
     <Route element={<AppLayout />}>
-      <Route path="/" element={<Navigate to="/folders" replace />} />
-      <Route path="/folders" element={<DocumentsRoute />} />
-      <Route path="/folders/:folderId" element={<DocumentsRoute />} />
-      <Route path="/documents/:documentId" element={<DocumentsRoute />} />
+      <Route path="/" element={<Navigate to="/documents" replace />} />
+      <Route path="/documents" element={<DocumentsRoute />} />
+      <Route path="/documents/folder/:folderId" element={<DocumentsRoute />} />
       <Route
-        path="/folders/:folderId/documents/:documentId"
+        path="/documents/folder/:folderId/documents/:documentId"
         element={<DocumentsRoute />}
       />
+      <Route path="/documents/:documentId" element={<DocumentsRoute />} />
       <Route path="/tags" element={<TagsRoute />} />
       <Route path="/correspondents" element={<CorrespondentsRoute />} />
-      <Route path="*" element={<Navigate to="/folders" replace />} />
+      <Route path="*" element={<Navigate to="/documents" replace />} />
     </Route>
   </Routes>
 );

frontend/src/styles.css

@@ -782,6 +782,7 @@ button.icon-button.ghost:hover:not([disabled]) {
 
 .folder-row:hover {
   background: var(--sidebar-hover-bg);
+  color: var(--fg);
 }
 
 .folder-row.active {
@@ -859,7 +860,7 @@ button.icon-button.ghost:hover:not([disabled]) {
   gap: 0.28rem;
   overflow-y: auto;
   padding: 1.25rem;
-  color: var(--sidebar-fg, #6f7683);
+  color: var(--sidebar-fg);
 }
 
 .sidebar-section:first-of-type,