{"categories":["Contract One","AI","OpenTelemetry","Kotlin"],"provider_name":"Hatena Blog","width":"100%","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/s/sansantech/20260224/20260224193915.jpg","url":"https://buildersbox.corp-sansan.com/entry/2025/12/18/120000","type":"rich","author_url":"https://blog.hatena.ne.jp/itomise-sansan/","height":"190","blog_url":"https://buildersbox.corp-sansan.com/","version":"1.0","author_name":"itomise-sansan","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbuildersbox.corp-sansan.com%2Fentry%2F2025%2F12%2F18%2F120000\" title=\"Kotlin \u00d7 OpenTelemetry \u3067\u5b9f\u73fe\u3059\u308b LLM observability - Contract One \u3067\u306e\u5b9f\u88c5\u3068\u904b\u7528 - Sansan Tech Blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","blog_title":"Sansan Tech Blog","description":"\u672c\u8a18\u4e8b\u306fSansan Advent Calendar 2025\u300118\u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002\u3053\u3093\u306b\u3061\u306f\u3002\u6280\u8853\u672c\u90e8Contract One Engineering Unit\u306e\u4f0a\u85e4\u3067\u3059\u3002\u53d6\u5f15\u7ba1\u7406\u30b5\u30fc\u30d3\u30b9\u300cContract One\u300d\u306e\u958b\u767a\u3092\u62c5\u5f53\u3057\u3066\u3044\u307e\u3059\u3002\u7d041\u5e74\u524d\u3001\u524d\u56de\u306e\u8a18\u4e8b\u3067LLM\u8a55\u4fa1\u57fa\u76e4\u306eLangfuse\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u5f53\u6642\u306f\u691c\u8a3c\u30d5\u30a7\u30fc\u30ba\u3067\u3057\u305f\u304c\u3001\u73fe\u5728\u306f\u672c\u756a\u74b0\u5883\u3067\u904b\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001Contract One\u306b\u304a\u3051\u308bLLM observability\u306e\u5168\u4f53\u50cf\u3068\u3001Kotlin \u00d7 OpenTelemetry\u3067\u306e\u5b9f\u88c5\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u80cc\u666f Contract One\u306f\u6700\u8fd1\u300cAI\u5951\u7d04\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u2026","title":"Kotlin \u00d7 OpenTelemetry \u3067\u5b9f\u73fe\u3059\u308b LLM observability - Contract One \u3067\u306e\u5b9f\u88c5\u3068\u904b\u7528","published":"2025-12-18 12:00:00"}