init

Sources/Benchmark/main.swift

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+// Copyright 2024 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Foundation
+import Nats
+
+let nats = NatsClientOptions()
+    .url(URL(string: "nats://localhost:4222")!)
+    .build()
+print("Connecting...")
+try! await nats.connect()
+print("Connected!")
+
+let data = "foo".data(using: .utf8)!
+// Warmup
+print("Warming up...")
+for _ in 0..<10_000 {
+    try! await nats.publish(data, subject: "foo")
+}
+print("Starting benchmark...")
+let now = DispatchTime.now()
+let numMsgs = 1_000_000
+for _ in 0..<numMsgs {
+    try! await nats.publish(data, subject: "foo")
+}
+try! await nats.flush()
+let elapsed = DispatchTime.now().uptimeNanoseconds - now.uptimeNanoseconds
+let msgsPerSec: Double = Double(numMsgs) / (Double(elapsed) / 1_000_000_000)
+print("Elapsed: \(elapsed / 1_000_000)ms")
+print("\(msgsPerSec) msgs/s")