Index: iknow-api/Program.cs
===================================================================
--- iknow-api/Program.cs	(revision 1b20b226a74790f84dc06dc488f4f761b510a3f2)
+++ iknow-api/Program.cs	(revision 2853f2ebbc643ed265db27aa0af19878c14db48c)
@@ -66,5 +66,9 @@
 // Postgres type by name; PgEnumLabels covers the members whose label is not
 // simply the lowercased member name.
-builder.Services.AddDbContext<AppDbContext>(options =>
+// AddDbContextPool reuses the DbContext instances themselves; the connections
+// underneath them are pooled separately by Npgsql, sized in the connection
+// string. Both matter here because every physical connection is one more
+// channel through the SSH tunnel.
+builder.Services.AddDbContextPool<AppDbContext>(options =>
     options.UseNpgsql(
         builder.Configuration.GetConnectionString("DefaultConnection"),