{"id":25434,"date":"2025-11-27T11:38:10","date_gmt":"2025-11-27T11:38:10","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=25434"},"modified":"2025-11-27T11:38:10","modified_gmt":"2025-11-27T11:38:10","slug":"%e3%83%ad%e3%82%ae%e3%83%b3%e3%82%b0%e3%83%a9%e3%82%a4%e3%83%96%e3%83%a9%e3%83%aazap%e3%81%ae%e9%ab%98%e9%80%9f%e5%8c%96%e6%8a%80%e8%a1%93%e3%81%a8i-o%e3%83%9c%e3%83%88%e3%83%ab%e3%83%8d%e3%83%83","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/25434\/","title":{"rendered":"\u30ed\u30ae\u30f3\u30b0\u30e9\u30a4\u30d6\u30e9\u30eazap\u306e\u9ad8\u901f\u5316\u6280\u8853\u3068I\/O\u30dc\u30c8\u30eb\u30cd\u30c3\u30af &#8211; TalentX Tech Blog"},"content":{"rendered":"\n<br \/><img decoding=\"async\" src=\"https:\/\/ogimage.blog.st-hatena.com\/98012380852510166\/17179246901323346863\/1764241064\" \/><\/p>\n<div>\n<p>\u3053\u3093\u306b\u3061\u306f\u3001TalentX \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u4f0a\u6771\u3068\u7533\u3057\u307e\u3059\u3002<br \/>\n\u63a1\u7528MA\u30b5\u30fc\u30d3\u30b9 <a target=\"_blank\" href=\"https:\/\/mytalent.jp\/crm\/\">MyTalent<\/a>\u306e\u958b\u767a\u3092\u62c5\u5f53\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>MyTalent\u3067\u306fGo\u8a00\u8a9e\u3092\u63a1\u7528\u3057\u3066\u304a\u308a\u3001\u30ed\u30ae\u30f3\u30b0\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u306f zap (<code>go.uber.org\/zap<\/code>) \u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u4ee5\u524d\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\u306e\u8abf\u67fb\u306e\u305f\u3081\u3001\u591a\u6570\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u4e0a\u3067zap\u3067\u306e\u30ed\u30b0\u51fa\u529b\u3092\u3057\u305f\u3068\u3053\u308d\u3001\u305d\u306e\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\u306e\u51fa\u529b\u81ea\u4f53\u304c\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3068\u306a\u308b\u3068\u3044\u3046\u5931\u6557\u3092\u7d4c\u9a13\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u305d\u3053\u3067\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30ed\u30ae\u30f3\u30b0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u88cf\u5074\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u306b\u3001zap\u306e\u9ad8\u901f\u5316\u6280\u8853\u3068I\/O\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u3064\u3044\u3066\u5206\u6790\u30fb\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p><iframe src=\"https:\/\/hatenablog-parts.com\/embed?url=https%3A%2F%2Fgithub.com%2Fuber-go%2Fzap\" title=\"GitHub - uber-go\/zap: Blazing fast, structured, leveled logging in Go.\" class=\"embed-card embed-webcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 155px; max-width: 500px; margin: 10px 0px;\" loading=\"lazy\"><\/iframe><cite class=\"hatena-citation\"><a target=\"_blank\" href=\"https:\/\/github.com\/uber-go\/zap\">github.com<\/a><\/cite><\/p>\n<h2 id=\"\u767a\u751f\u3057\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c\">\u767a\u751f\u3057\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u554f\u984c<\/h2>\n<p>\u524d\u8ff0\u306e\u3068\u304a\u308a\u3001\u4e00\u90e8\u6a5f\u80fd\u306e\u9045\u5ef6\u539f\u56e0\u3092\u7a76\u660e\u3059\u308b\u305f\u3081\u3001\u958b\u767a\u74b0\u5883\u4e0b\u3067zap\u306b\u3088\u308b\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\u3092\u591a\u6570\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u540c\u6642\u306b\u51e6\u7406\u3092\u884c\u3046\u30db\u30c3\u30c8\u30d1\u30b9\u306b\u5927\u91cf\u306b\u633f\u5165\u3057\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u305d\u306e\u30ed\u30b0\u51fa\u529b\u304c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4f4e\u4e0b\u3055\u305b\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u65b0\u305f\u306a\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3068\u306a\u308a\u3001\u8abf\u3079\u305f\u304b\u3063\u305f\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304c\u5206\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u672c\u6765\u3001\u3053\u306e\u3088\u3046\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8abf\u67fb\u306b\u306f<code>pprof<\/code>\u306a\u3069\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u306e\u5229\u7528\u304c\u9069\u5207\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u7d4c\u9a13\u304b\u3089\u3001\u30ed\u30b0\u51fa\u529b\u306fI\/O\u3092\u4f34\u3046\u9ad8\u30b3\u30b9\u30c8\u306a\u51e6\u7406\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u8eab\u3092\u3082\u3063\u3066\u5b66\u3073\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u3053\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7591\u554f\u304c\u751f\u3058\u3001\u4eca\u56de\u8abf\u3079\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>\u9ad8\u901f\u30ed\u30ae\u30f3\u30b0\u3092\u8b33\u3063\u3066\u3044\u308bzap\u3067\u306f\u3001\u3069\u306e\u51e6\u7406\u5de5\u7a0b\u3092\u3069\u306e\u3088\u3046\u306b\u9ad8\u901f\u5316\u3057\u3066\u3044\u308b\u306e\u304b<\/li>\n<li>\u591a\u6570\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u4e0a\u3067\u306f\u306a\u305c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u843d\u3061\u308b\u306e\u304b<\/li>\n<\/ul>\n<h2 id=\"zap-\u306e\u9ad8\u901f\u5316\u306e\u4ed5\u7d44\u307f\">zap \u306e\u9ad8\u901f\u5316\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>zap\u304c\u9ad8\u901f\u3092\u8b33\u3046\u306e\u306f\u3001\u4e3b\u306b\u30ed\u30b0\u3092\u66f8\u304d\u51fa\u3059\u307e\u3067\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u51e6\u7406\u306e\u52b9\u7387\u5316\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002<br \/>\n\u305d\u308c\u306b\u95a2\u3057\u3066\u3001<a target=\"_blank\" href=\"https:\/\/pkg.go.dev\/go.uber.org\/zap#pkg-overview\">zap\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u306b\u306f\u300cIt includes a <strong>reflection-free, zero-allocation JSON encoder<\/strong> &#8230;\u300d\u3068\u3042\u308a\u307e\u3059\u304c\u3001Reflection-free\u3001Zero-allocation\u3068\u306f\u3069\u3046\u3044\u3046\u3053\u3068\u304b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3 id=\"1-Reflection-free\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u30d5\u30ea\u30fc\">1. Reflection-free\uff08\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u30d5\u30ea\u30fc\uff09<\/h3>\n<p><code>fmt.Println<\/code>\u306f\u5f15\u6570\u304c<code>any<\/code>\u578b\u3067\u3042\u308b\u305f\u3081\u3001\u578b\u3092\u30e9\u30f3\u30bf\u30a4\u30e0\u3067<code>reflect<\/code>\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u7528\u3044\u3066\u52d5\u7684\u306b\u5206\u6790\uff08\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\uff09\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u51e6\u7406\u306fCPU\u30b3\u30b9\u30c8\u3092\u4f34\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\">\n<span class=\"synStatement\">func<\/span> Println(a ...any) (n <span class=\"synType\">int<\/span>, err <span class=\"synType\">error<\/span>)\n<\/pre>\n<p>zap\u306f\u3053\u308c\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u3001<code>zap.String()<\/code>, <code>zap.Int()<\/code> \u306e\u3088\u3046\u306b\u57fa\u5e95\u578b\u3054\u3068\u306b\u56fa\u6709\u306e\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u547c\u3073\u51fa\u3057\u6642\u70b9\u3067\u578b\u304c\u78ba\u5b9a\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u3067\u306e\u30ea\u30d5\u30af\u30ec\u30af\u30b7\u30e7\u30f3\u306b\u3088\u308b\u52d5\u7684\u306a\u578b\u5224\u5b9a\u304c\u4e0d\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\">\n<span class=\"synStatement\">func<\/span> String(key <span class=\"synType\">string<\/span>, val <span class=\"synType\">string<\/span>) Field\n<span class=\"synStatement\">func<\/span> Int(key <span class=\"synType\">string<\/span>, val <span class=\"synType\">int<\/span>) Field\n<\/pre>\n<p>\u305f\u3060\u3057\u3001<a target=\"_blank\" href=\"https:\/\/github.com\/uber-go\/zap\/blob\/master\/field.go#L490\">zap.Any()<\/a>\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306b\u306f\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u69cb\u9020\u4f53\u306e\u5834\u5408\u306b\u306f\u5404\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u6307\u5b9a\u3057\u3066\u30ed\u30ae\u30f3\u30b0\u3057\u305f\u307b\u3046\u304c\u826f\u3044\u3067\u3059\u3002<\/p>\n<h4 id=\"\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u3088\u308b\u6bd4\u8f03\">\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u3088\u308b\u6bd4\u8f03<\/h4>\n<p>\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u6709\u7121\u306b\u3088\u308b\u5dee\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001zap.Any\u3092\u4f7f\u3063\u305f\u5834\u5408(A)\u3068\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u3054\u3068\u306b\u6307\u5b9a\u3057\u305f\u5834\u5408(B)\u3067\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u3068\u3063\u3066\u6bd4\u8f03\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u203b Darwin (Apple M3 Pro, arm64)\u3001Go1.24.6\u74b0\u5883\u306b\u3066\u5b9f\u65bd\u3002<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\"><span class=\"synStatement\">var<\/span> testUser = User{ID: <span class=\"synConstant\">100<\/span>, Name: <span class=\"synConstant\">\"\u4f0a\u6771\u592a\u90ce\"<\/span>, Email: <span class=\"synConstant\">\"taro.itou@example.com\"<\/span>}\n\n\n<span class=\"synStatement\">func<\/span> BenchmarkZapAny(b *testing.B) {\n    <span class=\"synStatement\">for<\/span> i := <span class=\"synConstant\">0<\/span>; i \"User logged in\", zap.Any(<span class=\"synConstant\">\"user\"<\/span>, testUser))\n    }\n}\n\n\n<span class=\"synStatement\">func<\/span> BenchmarkZapTyped(b *testing.B) {\n    <span class=\"synStatement\">for<\/span> i := <span class=\"synConstant\">0<\/span>; i \"User logged in\",\n            zap.Int(<span class=\"synConstant\">\"id\"<\/span>, testUser.ID),\n            zap.String(<span class=\"synConstant\">\"name\"<\/span>, testUser.Name),\n            zap.String(<span class=\"synConstant\">\"email\"<\/span>, testUser.Email),\n        )\n    }\n}\n<\/pre>\n<p><code>go test -bench=.<\/code>\u3092\u5b9f\u884c\u3057\u3001\u4e0b\u8a18\u306e\u7d50\u679c\u3092\u5f97\u307e\u3057\u305f\u3002\uff08<code>ns\/op<\/code>\u306f\u51e6\u7406\u6642\u9593\uff08\u30ca\u30ce\u79d2\uff09\u3067\u3059\u3002\uff09<br \/>\nA\u3068B\u3068\u306e\u5272\u5408\u6bd4\u8f03\u3067\u3044\u3046\u306825%\u307b\u3069\u51e6\u7406\u304c\u901f\u304f\u306a\u3063\u305f\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n<ul>\n<li>zap.Any(A) : 39.66 ns\/op<\/li>\n<li>\u30d5\u30a3\u30fc\u30eb\u30c9\u3054\u3068\u6307\u5b9a(B) : 28.72 ns\/op<\/li>\n<\/ul>\n<h3 id=\"2-Zero-allocation\u30bc\u30ed\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\">2. Zero-allocation\uff08\u30bc\u30ed\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\uff09<\/h3>\n<p>zap\u3067\u306f\u3001\u30ed\u30b0\u3092\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u305f\u3081\u306e\u30d0\u30c3\u30d5\u30a1\u3092\u30ed\u30b0\u547c\u3073\u51fa\u3057\u3054\u3068\u306b\u65b0\u898f\u4f5c\u6210\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001<code>sync.Pool<\/code>\u304b\u3089\u53d6\u5f97\u3057\u3066\u518d\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002<code>sync.Pool<\/code>\u306b\u3088\u308a\u30d2\u30fc\u30d7\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u4f4e\u6e1b\u3092\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\uff08\u4ee5\u4e0b\u3001zap\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3088\u308a\u629c\u7c8b\uff09<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\"><span class=\"synStatement\">package<\/span> zapcore\n\n<span class=\"synStatement\">var<\/span> _jsonPool = pool.New(<span class=\"synType\">func<\/span>() *jsonEncoder {\n    <span class=\"synStatement\">return<\/span> &amp;jsonEncoder{}\n})\n<\/pre>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\"><span class=\"synStatement\">package<\/span> pool\n\n<span class=\"synStatement\">func<\/span> New[T any](fn <span class=\"synType\">func<\/span>() T) *Pool[T] {\n    <span class=\"synStatement\">return<\/span> &amp;Pool[T]{\n        pool: sync.Pool{\n            New: <span class=\"synType\">func<\/span>() any {\n                <span class=\"synStatement\">return<\/span> fn()\n            },\n        },\n    }\n}\n<\/pre>\n<p><a target=\"_blank\" href=\"https:\/\/github.com\/uber-go\/zap?tab=readme-ov-file#performance\">zap\u304c\u516c\u958b\u3057\u3066\u3044\u308b\u30d9\u30f3\u30c1\u30de\u30fc\u30af<\/a>\u3067\u3082\u898b\u3089\u308c\u308b\u3088\u3046\u306b\u5168\u3066\u306e\u72b6\u6cc1\u3067\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30bc\u30ed\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u305f\u3081\u3001Zero-allocation\u3068\u306f\u3053\u306e\u518d\u5229\u7528\u306a\u3069\u306e\u5de5\u592b\u306b\u3088\u3063\u3066\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u6e1b\u3089\u3057\u3066\u3044\u308b\u72b6\u614b\u3092\u610f\u5473\u3059\u308b\u3082\u306e\u3068\u601d\u308f\u308c\u307e\u3059\u3002<\/p>\n<h4 id=\"\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u3088\u308b\u6bd4\u8f03-1\">\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u3088\u308b\u6bd4\u8f03<\/h4>\n<p>sync.Pool\u3092\u4f7f\u7528\u3057\u305f\u30d0\u30c3\u30d5\u30a1\u306e\u518d\u5229\u7528\u306b\u3088\u308b\u5dee\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001sync.Pool\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408(A)\u3068\u3001\u4f7f\u3046\u5834\u5408(B)\u3067\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u3068\u3063\u3066\u6bd4\u8f03\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\">\n<span class=\"synStatement\">func<\/span> BenchmarkLogWithoutPool(b *testing.B) {\n    b.ReportAllocs()\n    b.RunParallel(<span class=\"synType\">func<\/span>(pb *testing.PB) {\n        <span class=\"synStatement\">for<\/span> pb.Next() {\n            entry := &amp;LogEntry{\n                Timestamp: time.Now(),\n                Level:     <span class=\"synConstant\">\"INFO\"<\/span>,\n                Message:   <span class=\"synConstant\">\"User logged in\"<\/span>,\n            }\n\n            buf := &amp;<span class=\"synType\">bytes.Buffer<\/span>{}\n            json.NewEncoder(buf).Encode(entry)\n            dummyOutput.Write(buf.Bytes())\n        }\n    })\n}\n\n\n<span class=\"synStatement\">func<\/span> BenchmarkLogWithPool(b *testing.B) {\n    bufferPool := &amp;sync.Pool{\n        New: <span class=\"synType\">func<\/span>() <span class=\"synStatement\">interface<\/span>{} {\n            <span class=\"synStatement\">return<\/span> &amp;<span class=\"synType\">bytes.Buffer<\/span>{}\n        },\n    }\n\n    b.ReportAllocs()\n    b.RunParallel(<span class=\"synType\">func<\/span>(pb *testing.PB) {\n        <span class=\"synStatement\">for<\/span> pb.Next() {\n            entry := &amp;LogEntry{\n                Timestamp: time.Now(),\n                Level:     <span class=\"synConstant\">\"INFO\"<\/span>,\n                Message:   <span class=\"synConstant\">\"User logged in\"<\/span>,\n            }\n\n            \n            buf := bufferPool.Get().(*<span class=\"synType\">bytes.Buffer<\/span>)\n            buf.Reset()\n\n            json.NewEncoder(buf).Encode(entry)\n            dummyOutput.Write(buf.Bytes())\n\n            \n            bufferPool.Put(buf)\n        }\n    })\n}\n<\/pre>\n<p><code>go test -bench=.<\/code>\u3092\u5b9f\u884c\u3057\u3001\u4e0b\u8a18\u306e\u7d50\u679c\u3092\u5f97\u307e\u3057\u305f\u3002\uff08<code>allocs\/op<\/code>\u306f\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3057\u305f\u56de\u6570\u3067\u3059\u3002\uff09<br \/>\nsync.Pool\u3092\u4f7f\u3046\u3053\u3068\u3067\u30a2\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u6e1b\u3063\u305f\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>sync.Pool\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408(A) : 4 allocs\/op<\/li>\n<li>sync.Pool\u3092\u4f7f\u3046\u5834\u5408(B) : 2 allocs\/op<\/li>\n<\/ul>\n<h2 id=\"\u591a\u6570\u30b4\u30eb\u30fc\u30c1\u30f3\u306b\u304a\u3051\u308bIO\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\">\u591a\u6570\u30b4\u30eb\u30fc\u30c1\u30f3\u306b\u304a\u3051\u308bI\/O\u30dc\u30c8\u30eb\u30cd\u30c3\u30af<\/h2>\n<p>\u524d\u7ae0\u307e\u3067\u306e\u691c\u8a3c\u306b\u3088\u308a\u3001zap\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u51e6\u7406\uff08JSON\u5316\uff09\u304c\u9ad8\u901f\u5316\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u9ad8\u901f\u5316\u306f\u30ed\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u66f8\u304d\u51fa\u3059I\/O\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u3042\u307e\u308a\u5f71\u97ff\u3057\u307e\u305b\u3093\u3002\u591a\u6570\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u540c\u6642\u306b\u30ed\u30ae\u30f3\u30b0\u3057\u305f\u969b\u306b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3057\u305f\u539f\u56e0\u306f\u3053\u306e\u66f8\u304d\u8fbc\u307f\u30d7\u30ed\u30bb\u30b9\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3 id=\"\u30ed\u30c3\u30af\u7af6\u5408\u306b\u3088\u308b\u76f4\u5217\u5316\">\u30ed\u30c3\u30af\u7af6\u5408\u306b\u3088\u308b\u76f4\u5217\u5316<\/h3>\n<p>\u591a\u6570\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u540c\u6642\u306b\u30ed\u30ae\u30f3\u30b0\u3092\u884c\u3046\u3068\u3001\u3053\u308c\u3089\u306f\u66f8\u304d\u8fbc\u307f\u30ed\u30c3\u30af\u3092\u596a\u3044\u5408\u3046\u72b6\u614b\uff08\u30ed\u30c3\u30af\u7af6\u5408\uff09\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u7d50\u679c\u3068\u3057\u3066\u3001\u3044\u304f\u3089\u30a8\u30f3\u30b3\u30fc\u30c9\u304c\u901f\u304f\u3066\u3082\u66f8\u304d\u8fbc\u307f\u51e6\u7406\u306f\u30ed\u30c3\u30af\u306b\u3088\u3063\u3066\u76f4\u5217\u5316\u3055\u308c\u3001\u4e26\u884c\u51e6\u7406\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u5931\u308f\u308c\u307e\u3059\u3002<\/p>\n<h4 id=\"\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u3088\u308b\u6bd4\u8f03-2\">\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u3088\u308b\u6bd4\u8f03<\/h4>\n<p>\u4e0a\u8a18\u306e\u539f\u56e0\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u5834\u5408(A)\u3068\u3001\u30b4\u30eb\u30fc\u30c1\u30f3\u3067\u4e26\u884c\u51e6\u7406\u3057\u305f\u5834\u5408(B)\u3067\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u3068\u3063\u3066\u6bd4\u8f03\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"code lang-go\" data-lang=\"go\" data-unlink=\"\">\n<span class=\"synStatement\">var<\/span> fields = []zap.Field{\n    zap.String(<span class=\"synConstant\">\"method\"<\/span>, <span class=\"synConstant\">\"GET\"<\/span>),\n    zap.String(<span class=\"synConstant\">\"path\"<\/span>, <span class=\"synConstant\">\"\/api\/v1\/user\/profile\"<\/span>),\n    zap.Int(<span class=\"synConstant\">\"status\"<\/span>, <span class=\"synConstant\">200<\/span>),\n    zap.Duration(<span class=\"synConstant\">\"duration\"<\/span>, time.Millisecond*<span class=\"synConstant\">50<\/span>),\n}\n\n\n<span class=\"synStatement\">func<\/span> BenchmarkZapSingleThread(b *testing.B) {\n    b.ResetTimer()\n    <span class=\"synStatement\">for<\/span> i := <span class=\"synConstant\">0<\/span>; i \/\/ \u30ed\u30ae\u30f3\u30b0\u51e6\u7406\u3092\u5b9f\u884c\n        logger.Info(<span class=\"synConstant\">\"Request completed\"<\/span>, fields...)\n    }\n}\n\n\n<span class=\"synStatement\">func<\/span> BenchmarkZapParallel(b *testing.B) {\n    b.ResetTimer()\n\n    \n    b.RunParallel(<span class=\"synType\">func<\/span>(pb *testing.PB) {\n        <span class=\"synStatement\">for<\/span> pb.Next() {\n            \n            logger.Info(<span class=\"synConstant\">\"Request completed\"<\/span>, fields...)\n        }\n    })\n}\n<\/pre>\n<p><code>go test -bench=.<\/code>\u3092\u5b9f\u884c\u3057\u3001\u4e0b\u8a18\u306e\u7d50\u679c\u3092\u5f97\u307e\u3057\u305f\u3002\u307b\u307c\u540c\u7b49\u3067\u3001\u51e6\u7406\u901f\u5ea6\u306b\u95a2\u3057\u3066\u306f\u4e26\u884c\u51e6\u7406\u306b\u3088\u308b\u6069\u6075\u304c\u5f97\u3089\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u5834\u5408(A) : 19801 ns\/op<\/li>\n<li>\u30b4\u30eb\u30fc\u30c1\u30f3\u3067\u4e26\u884c\u51e6\u7406\u3057\u305f\u5834\u5408(B) : 19149 ns\/op<\/li>\n<\/ul>\n<h4 id=\"pprof\u306b\u3088\u308b\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\">pprof\u306b\u3088\u308b\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/h4>\n<p>\u307e\u305f\u3001pprof\u3092\u4f7f\u3063\u305f\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u3088\u308a\u3001\u3069\u306e\u3088\u3046\u306a\u51e6\u7406\u3067\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u5f85\u6a5f\uff08\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\uff09\u3057\u3066\u3044\u308b\u306e\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"code\" data-lang=\"\" data-unlink=\"\">$ go test -bench=BenchmarkZapParallel -blockprofile block_prof.out -run=^$ .\/...\n$ go tool pprof block_prof.out\n(pprof) top\n       flat  flat%   sum%        cum   cum%\n     22.34s 82.80% 82.80%     22.34s 82.80%  sync.(*Mutex).Lock (inline)\n      2.32s  8.60% 91.41%      2.32s  8.60%  runtime.chanrecv1\n      2.32s  8.59%   100%      2.32s  8.59%  sync.(*WaitGroup).Wait\n      \uff08\u4ee5\u4e0b\u7565\uff09<\/pre>\n<p>\u4e0a\u8a18\u306e\u7d50\u679c\u306f\u30b4\u30eb\u30fc\u30c1\u30f3\u3067\u4e26\u884c\u51e6\u7406\u3057\u305f\u5834\u5408(B)\u306e\u3082\u306e\u3067\u3059\u304c\u3001\u95a2\u6570\u304c\u8cbb\u3084\u3057\u305f\u6642\u9593\u3092\u793a\u3059<code>flat<\/code>\u3068\u3044\u3046\u9805\u76ee\u306b\u7740\u76ee\u3059\u308b\u3068<code>sync.(*Mutex).Lock<\/code>\u304c22\u79d2\uff08\u5168\u4f53\u306e82%\u306e\u6642\u9593\uff09\u3067\u3042\u308a\u3001\u9577\u6642\u9593\u30ed\u30c3\u30af\u306e\u7372\u5f97\u5f85\u3061\u3057\u3066\u3044\u305f\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<h3 id=\"\u89e3\u6c7a\u7b56\">\u89e3\u6c7a\u7b56<\/h3>\n<p>\u4eca\u56de\u306f\u30ed\u30ae\u30f3\u30b0\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u308b\u305f\u3081I\/O\u6700\u9069\u5316\u306b\u3064\u3044\u3066\u306f\u6df1\u304f\u7acb\u3061\u5165\u308a\u307e\u305b\u3093\u304c\u3001\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u306f\u4e0b\u8a18\u306e\u9078\u629e\u80a2\u304c\u3042\u308a\u305d\u3046\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u30ed\u30ae\u30f3\u30b0\u30ec\u30d9\u30eb\u306e\u8abf\u6574\uff1a\u305d\u3082\u305d\u3082\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u898b\u76f4\u3059\u65b9\u91dd\u3002\u8981\u4ef6\u3092\u6e80\u305f\u3055\u306a\u3044\u5834\u5408\u304c\u3042\u308b\u3002<\/li>\n<li>\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u306e\u5f37\u5316\uff1a<code>zapcore.BufferedWriteSyncer<\/code>\u3092\u4f7f\u3044\u30d0\u30c3\u30d5\u30a1\u3092\u78ba\u4fdd\u3057\u3001I\/O\u306e\u983b\u5ea6\u3092\u4e0b\u3052\u308b\u3002\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u5206\u3001\u30e1\u30e2\u30ea\u304c\u5360\u6709\u3055\u308c\u308b\u3002<\/li>\n<li>\u975e\u540c\u671f\uff08\u30c1\u30e3\u30cd\u30eb\u5229\u7528\uff09\uff1a\u30ed\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30c1\u30e3\u30cd\u30eb\u306b\u6295\u3052\u3066\u3001\u5c02\u7528\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u30ed\u30ae\u30f3\u30b0\u3059\u308b\u65b9\u91dd\u3002\u5b9f\u88c5\u304c\u8907\u96d1\u5316\u3059\u308b\u3002<\/li>\n<\/ul>\n<p>\u5404\u9078\u629e\u80a2\u306b\u306f\u305d\u308c\u305e\u308c\u4e0a\u8a18\u306e\u3088\u3046\u306a\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u95c7\u96f2\u306b\u51e6\u7406\u901f\u5ea6\u3092\u6c42\u3081\u308b\u306e\u3067\u306a\u304f\u3001\u5fc5\u8981\u306b\u306a\u3063\u305f\u5834\u5408\u306b\u691c\u8a0e\u3057\u53d6\u6368\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u5927\u4e8b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/h2>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001zap\u306e\u9ad8\u901f\u5316\u6280\u8853\u3068\u30ed\u30ae\u30f3\u30b0\u304cI\/O\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u3092\u8abf\u67fb\u30fb\u691c\u8a3c\u3057\u307e\u3057\u305f\u3002\u666e\u6bb5\u306f\u610f\u8b58\u3059\u308b\u3053\u3068\u304c\u306a\u3044\u3001\u30ed\u30ae\u30f3\u30b0\u306e\u88cf\u5074\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u308c\u307e\u3067\u306f\u30ed\u30ae\u30f3\u30b0\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u304a\u307e\u3051\u3068\u3057\u3066\u8efd\u8996\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u305f\u90e8\u5206\u3082\u3042\u308a\u307e\u3057\u305f\u304c\u3001\u4eca\u56de\u306e\u8abf\u67fb\u3092\u901a\u3058\u3066\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u306e\u305f\u3081\u306b\u5fb9\u5e95\u3057\u3066\u52aa\u529b\u3055\u308c\u3066\u3044\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u958b\u767a\u8005\u306e\u65b9\u3005\u306b\u6539\u3081\u3066\u656c\u610f\u3092\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u306f\u7d4c\u9a13\u3057\u305f\u5931\u6557\u3092\u304d\u3063\u304b\u3051\u306b\u3001\u6c17\u306b\u306a\u3063\u305f\u4e8b\u67c4\u3092\u8abf\u3079\u307e\u3057\u305f\u304c\u3001\u4eca\u5f8c\u3082\u5358\u306a\u308b\u30df\u30b9\u3067\u7d42\u308f\u3089\u305b\u305a\u3001\u679c\u6562\u306a\u5931\u6557\u304b\u3089\u5b66\u3073\u3092\u5f97\u308b\u59ff\u52e2\u3067\u958b\u767a\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u6700\u5f8c\u307e\u3067\u304a\u8aad\u307f\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>TalentX\u3067\u306f\u4e00\u7dd2\u306b\u50cd\u304f\u4ef2\u9593\u3092\u52df\u96c6\u3057\u3066\u304a\u308a\u307e\u3059\u3002<br \/>\n\u3054\u8208\u5473\u3042\u308b\u65b9\u306f\u4e0b\u8a18\u30ea\u30f3\u30af\u306e\u6c42\u4eba\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<br \/>\n<iframe src=\"https:\/\/hatenablog-parts.com\/embed?url=https%3A%2F%2Ftalentx.brandmedia.i-myrefer.jp%2Fjob\" title=\"\u682a\u5f0f\u4f1a\u793eTalentX \u6c42\u4eba\u4e00\u89a7\" class=\"embed-card embed-webcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 155px; max-width: 500px; margin: 10px 0px;\" loading=\"lazy\"><\/iframe><cite class=\"hatena-citation\"><a target=\"_blank\" href=\"https:\/\/talentx.brandmedia.i-myrefer.jp\/job\">talentx.brandmedia.i-myrefer.jp<\/a><\/cite><\/p>\n<p>\u307e\u305f\u3001\u30ab\u30b8\u30e5\u30a2\u30eb\u9762\u8ac7\u3082\u884c\u3063\u3066\u3044\u307e\u3059\u306e\u3067\u305c\u3072\u3054\u5fdc\u52df\u304f\u3060\u3055\u3044\u3002<br \/>\n<iframe 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[&hellip;]","protected":false},"author":1,"featured_media":25435,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-25434","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-tec"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u30ed\u30ae\u30f3\u30b0\u30e9\u30a4\u30d6\u30e9\u30eazap\u306e\u9ad8\u901f\u5316\u6280\u8853\u3068I\/O\u30dc\u30c8\u30eb\u30cd\u30c3\u30af - TalentX Tech Blog - \u30dd\u30b1\u30b3\u30f3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tech.talentx.co.jp\/entry\/2025\/11\/27\/195744\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta 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