YAML（YAML Ain't Markup Language）
YAML 是一种对人友好的数据序列化语言，使用缩进来表示结构。它是 DevOps 工具（Docker Compose、Kubernetes、Ansible、GitHub Actions）配置文件的首选格式，也是 JSON 的超集。
MIME 类型
application/x-yaml
类型
文本
压缩
无损
优点
- + Highly readable — minimal syntax noise
- + Supports comments for inline documentation
- + Native in Docker, Kubernetes, Ansible, and CI/CD systems
- + Superset of JSON — any JSON is valid YAML
缺点
- − Indentation-sensitive — whitespace errors cause silent failures
- − Implicit type coercion can cause bugs ('yes' becomes boolean true)
- − More complex specification than JSON with anchors, tags, and directives
何时使用 .YAML
在配置文件、CI/CD 流水线、容器编排以及任何人工编辑的结构化数据中使用 YAML。
技术细节
YAML 使用缩进（空格，非制表符）表示嵌套，冒号表示键值对，连字符表示列表项。支持锚点（&）和别名（*）进行数据复用、多行字符串和注释。
历史
Clark Evans、Ingy dot Net 和 Oren Ben-Kiki 于 2001 年创建了 YAML。这个递归名称代表「YAML Ain't Markup Language」。YAML 1.2（2009）将规范对齐为 JSON 超集。
从 .YAML 转换
转换为 .YAML
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