diff --git a/Cargo.toml b/Cargo.toml
index 2ab993ab..a8099aa0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -85,7 +85,7 @@ hmac = "0.11.0"
 sha-1 = "0.9.8"
 
 [features]
-default = ["conduit_bin", "backend_sqlite"]
+default = ["conduit_bin", "backend_rocksdb"]
 backend_sled = ["sled"]
 backend_sqlite = ["sqlite"]
 backend_heed = ["heed", "crossbeam"]
diff --git a/src/database.rs b/src/database.rs
index a0f5cb50..bd05798b 100644
--- a/src/database.rs
+++ b/src/database.rs
@@ -318,10 +318,10 @@ impl Database {
                         .expect("pdu cache capacity fits into usize"),
                 )),
                 auth_chain_cache: Mutex::new(LruCache::new(1_000_000)),
-                shorteventid_cache: Mutex::new(LruCache::new(100_000_000)),
-                eventidshort_cache: Mutex::new(LruCache::new(100_000_000)),
-                shortstatekey_cache: Mutex::new(LruCache::new(100_000_000)),
-                statekeyshort_cache: Mutex::new(LruCache::new(100_000_000)),
+                shorteventid_cache: Mutex::new(LruCache::new(1_000_000)),
+                eventidshort_cache: Mutex::new(LruCache::new(1_000_000)),
+                shortstatekey_cache: Mutex::new(LruCache::new(1_000_000)),
+                statekeyshort_cache: Mutex::new(LruCache::new(1_000_000)),
                 our_real_users_cache: RwLock::new(HashMap::new()),
                 appservice_in_room_cache: RwLock::new(HashMap::new()),
                 stateinfo_cache: Mutex::new(LruCache::new(1000)),