按服务跟踪功能覆盖

服务	语言	工具库	手创Span	Span数据充实	RPC上下文传播	Span链接	行李	资源发现
Accounting Service	Go	🚧	🚧	🚧	🚧	🚧	🚧	✅
Ad	Java	✅	✅	✅	🔕	🔕	🔕	🚧
Cart	.NET	✅	✅	✅	🔕	🔕	🔕	✅
Checkout	Go	✅	✅	✅	🔕	🔕	🔕	✅
Currency	C++	🔕	✅	✅	✅	🔕	🔕	🚧
Email	Ruby	✅	✅	✅	🔕	🔕	🔕	🚧
Feature Flag	Erlang / Elixir	✅	✅	✅	🔕	🔕	🔕	🚧
Fraud Detection	Kotlin	✅	🚧	🚧	🚧	🚧	🚧	🚧
Frontend	JavaScript	✅	✅	✅	🔕	✅	✅	✅
Payment	JavaScript	✅	✅	✅	🔕	🔕	✅	✅
Product Catalog	Go	✅	🔕	✅	🔕	🔕	🔕	🚧
Quote Service	PHP	✅	✅	✅	🔕	🔕	🔕	🚧
Recommendation	Python	✅	✅	✅	🔕	🔕	🔕	🚧
Shipping	Rust	🔕	✅	✅	✅	🔕	🔕	🚧

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