diff --git a/README.md b/README.md
index ec3cff4..09a66f7 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,11 @@ https://hub.docker.com/r/scsibug/nostr-rs-relay
 
 Building `nostr-rs-relay` requires an installation of Cargo & Rust: https://www.rust-lang.org/tools/install
 
+The following OS packages will be helpful; on Debian/Ubuntu:
+```console
+$ sudo apt-get install build-essentials cmake protobuf-compiler pkg-config libssl-dev
+```
+
 Clone this repository, and then build a release version of the relay:
 
 ```console
diff --git a/config.toml b/config.toml
index a3edb91..3dea8ee 100644
--- a/config.toml
+++ b/config.toml
@@ -42,7 +42,7 @@ description = "A newly created nostr-rs-relay.\n\nCustomize this with your own i
 # Database connection pool settings for subscribers:
 
 # Minimum number of SQLite reader connections
-#min_conn = 4
+#min_conn = 0
 
 # Maximum number of SQLite reader connections.  Recommend setting this
 # to approx the number of cores.
diff --git a/docs/reverse-proxy.md b/docs/reverse-proxy.md
index 157ba5c..e6c6d0d 100644
--- a/docs/reverse-proxy.md
+++ b/docs/reverse-proxy.md
@@ -29,7 +29,7 @@ frontend fe_prod
     bind    :80
     http-request set-header X-Forwarded-Proto https if { ssl_fc }
     redirect scheme https code 301 if !{ ssl_fc }
-    acl host_relay hdr(host) -i relay.example.com
+    acl host_relay hdr(host) -i -m beg relay.example.com
     use_backend relay if host_relay
     # HSTS (1 year)
     http-response set-header Strict-Transport-Security max-age=31536000
@@ -120,7 +120,7 @@ Assumptions:
 * `Traefik` is running in `Docker`, using `docker compose` and labels for the static configuration. An equivalent setup useing a Traefik config file is possible too (but not covered here).
 * Strict Transport Security is enabled.
 * Hostname for the relay is `relay.example.com`, email adres for ACME certificates provider is `name@example.com`.
-* ipv6 is enabled, a viable private ipv6 subnet is specified in the example below. 
+* ipv6 is enabled, a viable private ipv6 subnet is specified in the example below.
 * Relay is running on port `8080`.
 
 ```
@@ -196,4 +196,4 @@ services:
 
 ### Traefik Notes
 
-Traefik will take care of the provisioning and renewal of certificates. In case of an ipv4-only relay, simply detele the `enable_ipv6:` and `ipam:` entries in the `networks:` section of the docker-compose file.
\ No newline at end of file
+Traefik will take care of the provisioning and renewal of certificates. In case of an ipv4-only relay, simply detele the `enable_ipv6:` and `ipam:` entries in the `networks:` section of the docker-compose file.
diff --git a/src/main.rs b/src/main.rs
index 97aa032..6a9116d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,7 +8,6 @@ use std::sync::mpsc as syncmpsc;
 use std::sync::mpsc::{Receiver as MpscReceiver, Sender as MpscSender};
 use std::thread;
 use tracing::info;
-
 #[cfg(not(target_env = "msvc"))]
 use tikv_jemallocator::Jemalloc;
 
diff --git a/src/repo/sqlite.rs b/src/repo/sqlite.rs
index 91b48e6..b156f0c 100644
--- a/src/repo/sqlite.rs
+++ b/src/repo/sqlite.rs
@@ -62,7 +62,7 @@ impl SqliteRepo {
             "writer",
             settings,
             OpenFlags::SQLITE_OPEN_READ_WRITE | OpenFlags::SQLITE_OPEN_CREATE,
-            1,
+            0,
             2,
             false,
         );
@@ -70,7 +70,7 @@ impl SqliteRepo {
             "maintenance",
             settings,
             OpenFlags::SQLITE_OPEN_READ_WRITE | OpenFlags::SQLITE_OPEN_CREATE,
-            1,
+            0,
             2,
             true,
         );
@@ -1199,6 +1199,7 @@ pub fn build_pool(
         .test_on_check_out(true) // no noticeable performance hit
         .min_idle(Some(min_size))
         .max_size(max_size)
+        .idle_timeout(Some(Duration::from_secs(10)))
         .max_lifetime(Some(Duration::from_secs(30)))
         .build(manager)
         .unwrap();
diff --git a/src/repo/sqlite_migration.rs b/src/repo/sqlite_migration.rs
index 709a572..f2ccab0 100644
--- a/src/repo/sqlite_migration.rs
+++ b/src/repo/sqlite_migration.rs
@@ -19,7 +19,7 @@ PRAGMA foreign_keys = ON;
 PRAGMA journal_size_limit = 32768;
 PRAGMA temp_store = 2; -- use memory, not temp files
 PRAGMA main.cache_size = 20000; -- 80MB max cache size per conn
-pragma mmap_size = 17179869184; -- cap mmap at 16GB
+pragma mmap_size = 0; -- disable mmap (default)
 "##;
 
 /// Latest database version