记录人生感悟、习得的技能，以及值得反复阅读的片刻。http://localhost:4321/zh-CNhttp://localhost:4321/writing/llm-what-it-does/http://localhost:4321/writing/llm-what-it-does/从 token、上下文和下一个词预测出发，理解模型为什么能写作，也为什么会一本正经地出错。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/rag-why-and-architecture/http://localhost:4321/writing/rag-why-and-architecture/理解检索增强生成解决什么问题，以及一次回答如何经过检索、排序和生成。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/agent-vs-workflow/http://localhost:4321/writing/agent-vs-workflow/判断任务何时需要自主选择动作，何时使用固定流程会更可靠、更便宜。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-choose-application-type/http://localhost:4321/writing/dify-choose-application-type/判断一个需求应该使用 Chatflow、Workflow 还是 Agent，避免一开始就选错交互方式。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/agent-tool-design/http://localhost:4321/writing/agent-tool-design/用单一职责、清楚参数和最小权限，让模型能够选对工具并安全执行。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/llm-prompts-and-context/http://localhost:4321/writing/llm-prompts-and-context/用任务、资料、约束和示例构造清楚输入，并通过分隔与优先级减少歧义。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/rag-prepare-knowledge/http://localhost:4321/writing/rag-prepare-knowledge/在建立索引前处理重复、版本、权限和文档结构，让知识库先成为可信资料库。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-map-requirements-to-flow/http://localhost:4321/writing/dify-map-requirements-to-flow/从输入、事实来源、确定性规则和输出契约出发，把一句模糊需求拆成可实现的流程。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/rag-chunking-and-indexing/http://localhost:4321/writing/rag-chunking-and-indexing/根据问题粒度切分资料，并理解向量检索如何把语义相近的问题与片段连接起来。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/llm-structured-output-tools/http://localhost:4321/writing/llm-structured-output-tools/让模型输出可验证的数据，并通过受控接口查询事实、执行计算或调用外部服务。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/agent-state-and-memory/http://localhost:4321/writing/agent-state-and-memory/区分当前任务状态、短期对话和长期记忆，避免 Agent 忘记目标或积累错误信息。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-node-selection-guide/http://localhost:4321/writing/dify-node-selection-guide/按“理解、检索、控制、处理、集成和输出”六类能力，建立一张可复用的节点选型表。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/agent-planning-and-recovery/http://localhost:4321/writing/agent-planning-and-recovery/通过有限计划、明确停止条件和可恢复错误，让 Agent 不迷路也不无限重试。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/llm-model-selection/http://localhost:4321/writing/llm-model-selection/根据任务质量、延迟、成本、上下文和部署边界建立可重复的模型选型方法。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/rag-retrieval-and-reranking/http://localhost:4321/writing/rag-retrieval-and-reranking/在“不要漏掉答案”和“不要塞入噪声”之间取得平衡，让最有用的片段进入模型上下文。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-variables-branches-debugging/http://localhost:4321/writing/dify-variables-branches-debugging/学会读懂节点输入输出、对齐分支类型，并用逐节点测试找到工作流真正的故障位置。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/rag-generation-and-evaluation/http://localhost:4321/writing/rag-generation-and-evaluation/约束模型忠实使用检索片段，提供可核对引用，并定位答案错误发生在哪一层。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/llm-evaluation-and-safety/http://localhost:4321/writing/llm-evaluation-and-safety/用固定样本、运行指标和风险分级判断 LLM 应用是否真的可以交给用户。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/agent-evaluation-and-operations/http://localhost:4321/writing/agent-evaluation-and-operations/从完整轨迹而不只是最终回答评估 Agent，并限制真实环境中的权限、成本和错误影响。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-knowledge-base-assistant/http://localhost:4321/writing/dify-knowledge-base-assistant/把产品手册、制度和常见问题变成可检索、可追溯的回答，而不是让模型凭记忆猜测。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-customer-service-routing/http://localhost:4321/writing/dify-customer-service-routing/用问题分类、知识检索和工单接口处理常见咨询，同时为高风险问题保留人工出口。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-document-extraction/http://localhost:4321/writing/dify-document-extraction/用文档提取、参数提取和规则校验，把非结构化文件变成可交付给下游系统的数据。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-content-workflow/http://localhost:4321/writing/dify-content-workflow/把资料整合、平台拆分、内容生成和固定格式输出编排成一条可复用的工作流。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-data-report/http://localhost:4321/writing/dify-data-report/让接口和代码负责取数与计算，让模型负责解释变化并生成面向读者的报告。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-tool-agent/http://localhost:4321/writing/dify-tool-agent/让 Agent 根据目标选择搜索、查询和计算工具，同时用权限边界限制它能做的事。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-api-integration/http://localhost:4321/writing/dify-api-integration/理清调用方向，用 HTTP 节点访问外部服务，也用应用 API 把能力嵌入网站、企业工具和后端。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/dify-publish-and-improve/http://localhost:4321/writing/dify-publish-and-improve/从测试样本、运行日志和用户反馈中发现问题，让 Dify 应用从演示走向可维护服务。Sat, 29 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/prepare-repeat-and-share/http://localhost:4321/writing/prepare-repeat-and-share/不打无准备之战；重复带来经验，分享与聆听让理解继续向外生长。Sun, 09 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/boundaries-change-and-judgment/http://localhost:4321/writing/boundaries-change-and-judgment/看清不可逾越的边界，也看见变化、代价与机遇同时存在。Sun, 09 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/when-the-performance-begins/http://localhost:4321/writing/when-the-performance-begins/观众只在乎演出是否精彩，表演者也会被他们的期待推着向前。Sun, 09 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/believe-in-yourself/http://localhost:4321/writing/believe-in-yourself/当无人相信时仍然相信自己，并且继续靠自己走向想要抵达的地方。Sun, 09 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/while-there-is-still-time/http://localhost:4321/writing/while-there-is-still-time/时间不会停下；趁彼此仍在等待，认清谁才是最重要的人。Sun, 09 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/letting-go-and-starting-again/http://localhost:4321/writing/letting-go-and-starting-again/能平静讲述曾经的跌宕，也不要失去重新开始的勇气。Sun, 09 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/goals-make-the-road-longer/http://localhost:4321/writing/goals-make-the-road-longer/去程的急切与归途的松弛，背后都是目标尚未完成时带来的紧迫。Sun, 09 Aug 2026 00:00:00 GMThttp://localhost:4321/writing/after-thirty-understanding-time/http://localhost:4321/writing/after-thirty-understanding-time/时间从来不缺席，缺席的是我们对专注与选择的诚实。Sat, 11 May 2024 00:00:00 GMThttp://localhost:4321/writing/slower-go-further/http://localhost:4321/writing/slower-go-further/降低节奏不是放弃前进，而是在自己的时区里保持清醒。Wed, 08 May 2024 00:00:00 GMT