update README

Cargo.toml

@@ -16,7 +16,6 @@ version = "0.4.1"
 anyhow = "1"
 bytes = "1"
 clap = {version = "4.3.3", features = ["color", "help", "usage", "derive"], optional = true}
-lazy_static = "1.4.0"
 prost = "0.11"
 rand = "0.8.5"
 
@@ -26,12 +25,14 @@ tzf-rel = "0.0.2023-b"
 # geometry-rs = { git =  "http://github.com/ringsaturn/geometry-rs", tag = "v0.1.0"}
 geometry-rs = "0.1.2"
 
-# cities-json = { git = "https://github.com/ringsaturn/go-cities.json", rev = "38a818ded6dcd1759e4633a36502b693c8b14858" }
-cities-json = "0.3.8"
-
 [dev-dependencies]
+lazy_static = "1.4.0"
+
 criterion = {version = "0.5", features = ["html_reports"]}
 
+# cities-json = { git = "https://github.com/ringsaturn/go-cities.json", rev = "38a818ded6dcd1759e4633a36502b693c8b14858" }
+cities-json = "0.3.8"
+
 [features]
 default = ["clap"]
 

README.md

@@ -8,18 +8,42 @@
 
 ## Build options
 
-By default, the binary is built as well. If you don't want/need it, then build like this:
+By default, the binary is built as well. If you don't want/need it, then build
+like this:
 
 ```bash
-> cargo build --no-default-features
+cargo build --no-default-features
 ```
 
-Or put in your `Cargo.toml` file:
+Or add in the below way:
 
-```toml
-tzf-rs = { version = "0.4.1", default-features = false }
+```bash
+cargo add tzf-rs --no-default-features
+```
+
+## Best practice
+
+It's expensive to init tzf-rs's Finder/FuzzyFinder/DefaultFinder, please
+consider reuse it or as a global var. Below is a global var example:
+
+```rust
+use lazy_static::lazy_static;
+use tzf_rs::DefaultFinder;
+
+lazy_static! {
+    static ref FINDER: DefaultFinder = DefaultFinder::new();
+}
+
+fn main() {
+    print!("{:?}\n", FINDER.get_tz_name(116.3883, 39.9289));
+    print!("{:?}\n", FINDER.get_tz_names(116.3883, 39.9289));
+}
 ```
 
+For reuse it,
+[`racemap/rust-tz-service`](https://github.com/racemap/rust-tz-service) is a
+good example.
+
 ## Bindings
 
 - Ruby, see [tzf-rb](https://github.com/HarlemSquirrel/tzf-rb)