Reimplement old database code for better performance (#365)

Cargo.lock

@@ -340,6 +340,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "async_once"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ce4f10ea3abcd6617873bae9f91d1c5332b4a778bd9ce34d0cd517474c1de82"
+
 [[package]]
 name = "atoi"
 version = "0.4.0"
@@ -524,6 +530,42 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c1db59621ec70f09c5e9b597b220c7a2b43611f4710dc03ceb8748637775692c"
 
+[[package]]
+name = "cached"
+version = "0.34.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aadf76ddea74bab35ebeb8f1eb115b9bc04eaee42d8acc0d5f477dee6b176c9a"
+dependencies = [
+ "async-trait",
+ "async_once",
+ "cached_proc_macro",
+ "cached_proc_macro_types",
+ "futures",
+ "hashbrown 0.12.1",
+ "lazy_static",
+ "once_cell",
+ "thiserror",
+ "tokio",
+]
+
+[[package]]
+name = "cached_proc_macro"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bce0f37f9b77c6b93cdf3f060c89adca303d2ab052cacb3c3d1ab543e8cecd2f"
+dependencies = [
+ "cached_proc_macro_types",
+ "darling",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "cached_proc_macro_types"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a4f925191b4367301851c6d99b09890311d74b0d43f274c0b34c86d308a3663"
+
 [[package]]
 name = "castaway"
 version = "0.1.2"
@@ -1410,6 +1452,7 @@ dependencies = [
  "base64",
  "bitflags",
  "bytes",
+ "cached",
  "dashmap",
  "dotenv",
  "env_logger",
@@ -2776,9 +2819,21 @@ dependencies = [
  "pin-project-lite",
  "signal-hook-registry",
  "socket2",
+ "tokio-macros",
  "winapi",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9724f9a975fb987ef7a3cd9be0350edcbe130698af5b8f7a631e23d42d052484"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tokio-native-tls"
 version = "0.3.0"