diff --git a/Cargo.toml b/Cargo.toml
index af44f09..df3a82b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -48,3 +48,44 @@ tokio = { version = "1", features = ["full"] }
 toml = "0.8.0"
 tungstenite = "0.20"
 url = "2.4"
+
+# see: https://nnethercote.github.io/perf-book/build-configuration.html
+[profile.dev]
+opt-level = 0
+debug = true
+rpath = false
+lto = false
+debug-assertions = true
+codegen-units = 4
+
+# compile dependencies with optimizations in dev mode
+# see: https://doc.rust-lang.org/stable/cargo/reference/profiles.html#overrides
+[profile.dev.package."*"]
+opt-level = 3
+debug = true
+
+[profile.release]
+opt-level = 3
+debug = false # true for profiling
+rpath = false
+lto = "fat"
+debug-assertions = false
+codegen-units = 1
+strip = true
+panic = "abort"
+
+[profile.test]
+opt-level = 1
+debug = true
+rpath = false
+lto = false
+debug-assertions = true
+codegen-units = 4
+
+[profile.bench]
+opt-level = 3
+debug = true # true for profiling
+rpath = false
+lto = true
+debug-assertions = false
+codegen-units = 1