From 783c83dded7ab7a598b25035583c7b5133169ff4 Mon Sep 17 00:00:00 2001
From: tottoto <tottotodev@gmail.com>
Date: Wed, 25 Feb 2026 07:54:24 +0900
Subject: [PATCH] examples: Reduce mongodb example dependency (#3673)

---
 examples/Cargo.lock         | 152 +++---------------------------------
 examples/mongodb/Cargo.toml |   2 +-
 2 files changed, 11 insertions(+), 143 deletions(-)

diff --git a/examples/Cargo.lock b/examples/Cargo.lock
index 36d02ae7..7d263b76 100644
--- a/examples/Cargo.lock
+++ b/examples/Cargo.lock
@@ -489,23 +489,22 @@ dependencies = [
 
 [[package]]
 name = "bson"
-version = "2.15.0"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7969a9ba84b0ff843813e7249eed1678d9b6607ce5a3b8f0a47af3fcf7978e6e"
+checksum = "b3f109694c4f45353972af96bf97d8a057f82e2d6e496457f4d135b9867a518c"
 dependencies = [
  "ahash",
  "base64 0.22.1",
  "bitvec",
- "getrandom 0.2.17",
  "getrandom 0.3.4",
  "hex",
  "indexmap",
  "js-sys",
- "once_cell",
  "rand 0.9.2",
  "serde",
  "serde_bytes",
- "serde_json",
+ "simdutf8",
+ "thiserror 2.0.18",
  "time",
  "uuid",
 ]
@@ -714,21 +713,6 @@ dependencies = [
  "cfg-if 1.0.4",
 ]
 
-[[package]]
-name = "critical-section"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
-
-[[package]]
-name = "crossbeam-channel"
-version = "0.5.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "82b8f8f868b36967f9606790d1903570de9ceaf870a7bf9fbbd3016d636a2cb2"
-dependencies = [
- "crossbeam-utils",
-]
-
 [[package]]
 name = "crossbeam-epoch"
 version = "0.9.18"
@@ -1116,18 +1100,6 @@ dependencies = [
  "cfg-if 1.0.4",
 ]
 
-[[package]]
-name = "enum-as-inner"
-version = "0.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1e6a265c649f3f5979b601d26f1d05ada116434c87741c9493cb56218f76cbc"
-dependencies = [
- "heck",
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -2161,52 +2133,6 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
-[[package]]
-name = "hickory-proto"
-version = "0.25.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8a6fe56c0038198998a6f217ca4e7ef3a5e51f46163bd6dd60b5c71ca6c6502"
-dependencies = [
- "async-trait",
- "cfg-if 1.0.4",
- "data-encoding",
- "enum-as-inner",
- "futures-channel",
- "futures-io",
- "futures-util",
- "idna",
- "ipnet",
- "once_cell",
- "rand 0.9.2",
- "ring",
- "thiserror 2.0.18",
- "tinyvec",
- "tokio",
- "tracing",
- "url",
-]
-
-[[package]]
-name = "hickory-resolver"
-version = "0.25.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc62a9a99b0bfb44d2ab95a7208ac952d31060efc16241c87eaf36406fecf87a"
-dependencies = [
- "cfg-if 1.0.4",
- "futures-util",
- "hickory-proto",
- "ipconfig",
- "moka",
- "once_cell",
- "parking_lot",
- "rand 0.9.2",
- "resolv-conf",
- "smallvec",
- "thiserror 2.0.18",
- "tokio",
- "tracing",
-]
-
 [[package]]
 name = "hkdf"
 version = "0.12.4"
@@ -2500,18 +2426,6 @@ dependencies = [
  "hashbrown 0.16.1",
 ]
 
-[[package]]
-name = "ipconfig"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b58db92f96b720de98181bbbe63c831e87005ab460c1bf306eb2622b4707997f"
-dependencies = [
- "socket2 0.5.10",
- "widestring",
- "windows-sys 0.48.0",
- "winreg",
-]
-
 [[package]]
 name = "ipnet"
 version = "2.11.0"
@@ -2849,23 +2763,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "moka"
-version = "0.12.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4ac832c50ced444ef6be0767a008b02c106a909ba79d1d830501e94b96f6b7e"
-dependencies = [
- "crossbeam-channel",
- "crossbeam-epoch",
- "crossbeam-utils",
- "equivalent",
- "parking_lot",
- "portable-atomic",
- "smallvec",
- "tagptr",
- "uuid",
-]
-
 [[package]]
 name = "mongocrypt"
 version = "0.3.2"
@@ -2899,8 +2796,6 @@ dependencies = [
  "futures-io",
  "futures-util",
  "hex",
- "hickory-proto",
- "hickory-resolver",
  "hmac 0.12.1",
  "macro_magic",
  "md-5",
@@ -3092,10 +2987,6 @@ name = "once_cell"
 version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
-dependencies = [
- "critical-section",
- "portable-atomic",
-]
 
 [[package]]
 name = "opaque-debug"
@@ -3648,12 +3539,6 @@ dependencies = [
  "webpki-roots 1.0.6",
 ]
 
-[[package]]
-name = "resolv-conf"
-version = "0.7.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e061d1b48cb8d38042de4ae0a7a6401009d6143dc80d2e2d6f31f0bdd6470c7"
-
 [[package]]
 name = "ring"
 version = "0.17.14"
@@ -3888,7 +3773,6 @@ version = "1.0.149"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
 dependencies = [
- "indexmap",
  "itoa",
  "memchr",
  "serde",
@@ -4026,6 +3910,12 @@ version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e320a6c5ad31d271ad523dcf3ad13e2767ad8b1cb8f047f75a8aeaf8da139da2"
 
+[[package]]
+name = "simdutf8"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3a9fe34e3e7a50316060351f37187a3f546bce95496156754b601a5fa71b76e"
+
 [[package]]
 name = "simple_asn1"
 version = "0.6.3"
@@ -4354,12 +4244,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "tagptr"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b2093cf4c8eb1e67749a6762251bc9cd836b6fc171623bd0a9d324d37af2417"
-
 [[package]]
 name = "take_mut"
 version = "0.2.2"
@@ -5144,12 +5028,6 @@ dependencies = [
  "web-sys",
 ]
 
-[[package]]
-name = "widestring"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72069c3113ab32ab29e5584db3c6ec55d416895e60715417b5b883a357c3e471"
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -5462,16 +5340,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "winreg"
-version = "0.50.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "524e57b2c537c0f9b1e69f1965311ec12182b4122e45035b1508cd24d2adadb1"
-dependencies = [
- "cfg-if 1.0.4",
- "windows-sys 0.48.0",
-]
-
 [[package]]
 name = "wit-bindgen"
 version = "0.51.0"
diff --git a/examples/mongodb/Cargo.toml b/examples/mongodb/Cargo.toml
index c90861c1..927bded7 100644
--- a/examples/mongodb/Cargo.toml
+++ b/examples/mongodb/Cargo.toml
@@ -6,7 +6,7 @@ publish = false
 
 [dependencies]
 axum = { path = "../../axum" }
-mongodb = "3.3.0"
+mongodb = { version = "3.3.0", default-features = false, features = ["bson-3", "compat-3-3-0", "rustls-tls"] }
 serde = { version = "1.0", features = ["derive"] }
 tokio = { version = "1.0", features = ["full"] }
 tower-http = { version = "0.6.1", features = ["add-extension", "trace"] }