Initial commit

Assisted-by: GLM 5.3

internal/app/bench_test.go

@@ -0,0 +1,98 @@
+// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
+// SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
+
+package app
+
+import (
+	"fmt"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"sourcedock.dev/petrbalvin/volumen/internal/config"
+	"sourcedock.dev/petrbalvin/volumen/internal/store"
+)
+
+// BenchmarkServer drives the wired handler over real HTTP: a list, a
+// single post, a tag feed and the sitemap, against a corpus the size of a
+// site that has been running for a few years. It is also the workload the
+// PGO profile is recorded from, which is why it exercises the whole chain
+// rather than one function.
+func BenchmarkServer(b *testing.B) {
+	const posts = 500
+	dir := b.TempDir()
+	content := filepath.Join(dir, "posts")
+	if err := os.MkdirAll(content, 0o755); err != nil {
+		b.Fatalf("mkdir: %v", err)
+	}
+	for i := range posts {
+		body := fmt.Sprintf(`+++
+title = "Post %d"
+slug = "post-%d"
+date = 2026-01-%02d
+lang = "en"
+tags = ["go", "bench"]
+series = "Bench"
+series_order = %d
++++
+
+## Section
+
+A paragraph with **markup**, a [link](https://example.com) and enough
+words to make the renderer do real work: %s
+
+- one
+- two
+- three
+`, i, i, i%28+1, i, strings.Repeat("lorem ipsum dolor sit amet ", 40))
+		path := filepath.Join(content, fmt.Sprintf("post-%d.md", i))
+		if err := os.WriteFile(path, []byte(body), 0o644); err != nil {
+			b.Fatalf("write: %v", err)
+		}
+	}
+	cfg := config.Defaults()
+	cfg.ContentDir = content
+	cfg.UsersFile = filepath.Join(dir, "users.toml")
+	cfg.Admin.SessionKey = strings.Repeat("k", 64)
+	cfg.Site.BaseURL = "https://site.example"
+	cfg.API.RateLimit = 0
+	srv, err := New(cfg, store.New(store.Options{ContentDir: content, DefaultLang: "en", RevisionLimit: 10}))
+	if err != nil {
+		b.Fatalf("New: %v", err)
+	}
+	// The access line each request writes is noise inside a benchmark.
+	previous := slog.Default()
+	slog.SetDefault(slog.New(slog.NewTextHandler(io.Discard, nil)))
+	b.Cleanup(func() { slog.SetDefault(previous) })
+
+	server := httptest.NewServer(srv.Handler())
+	defer server.Close()
+
+	targets := []string{
+		"/api/volumen/posts?limit=20",
+		"/api/volumen/posts/post-250",
+		"/api/volumen/tags",
+		"/api/volumen/tags/go/feed.json",
+		"/api/volumen/sitemap.xml",
+	}
+	client := server.Client()
+	b.ResetTimer()
+	for i := 0; b.Loop(); i++ {
+		resp, err := client.Get(server.URL + targets[i%len(targets)])
+		if err != nil {
+			b.Fatalf("get: %v", err)
+		}
+		if _, err := io.Copy(io.Discard, resp.Body); err != nil {
+			b.Fatalf("read: %v", err)
+		}
+		resp.Body.Close()
+		if resp.StatusCode != http.StatusOK {
+			b.Fatalf("%s: status %d", targets[i%len(targets)], resp.StatusCode)
+		}
+	}
+}