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- Add 5 new slide pages: eino-deep-dive, ratelimit-overview, ratelimit-lua, async-deep-dive, harness - Add 4 new drawio SVGs: pipeline-detail, ratelimit, async-task, harness - Update all existing slides with v-clicks progressive reveal - Add presenter notes and interactive prompts - Expand slides.md to register all new pages (16 → 25+ slides) - Fix text overflow by trimming content per Item block - Add Eino Graph deep dive: WithGenLocalState, Pre/Post Handler, branch routing - Add rate limiting section: algorithm comparison, Lua script, Gin middleware - Add async task deep dive: TaskQueue FIFO, context progress injection - Add consistency section: style/pipeline/data/deployment 4-layer guarantees
72 lines
1.9 KiB
Markdown
72 lines
1.9 KiB
Markdown
# 异步任务 — 队列与调度
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FIFO 串行执行，信号驱动调度
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<div class="mt-2">
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```go {1-6|8-12|all}
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type TaskQueue struct {
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mu sync.Mutex
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jobs []*TaskJob
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ready chan struct{} // 新任务到达信号
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stop chan struct{} // 优雅关闭信号
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}
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func (q *TaskQueue) Enqueue(job *TaskJob) {
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q.mu.Lock()
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q.jobs = append(q.jobs, job)
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q.mu.Unlock()
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q.ready <- struct{}{} // 唤醒 run() 协程
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}
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```
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</div>
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<v-clicks>
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<Item title="Enqueue → run() → processNext() 流程">
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提交任务入队并发送信号。`run()` 协程阻塞等待信号，收到后调用 `processNext()` 取队首任务执行。FIFO 保证任务按提交顺序串行处理。
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</Item>
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<Item title="每个 Job 是一个闭包">
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`TaskJob` 封装了 `context.Context` 和执行函数。闭包捕获任务参数，context 控制超时和取消，确保每个任务独立且可中断。
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</Item>
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</v-clicks>
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---
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# 进度推送与 WebSocket
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Context 注入 + 多通道推送
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<div class="mt-2">
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```go {1-3|5-8|all}
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func WithProgressReporter(ctx context.Context, r ProgressReporter) context.Context {
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return context.WithValue(ctx, progressCtxKey, r)
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}
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// 管线节点中使用
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reporter := GetProgressReporter(ctx)
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reporter.Report(Progress{Stage: "prompt", Percent: 25})
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```
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</div>
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<v-clicks>
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<Item title="进度阶段划分">
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5%（任务创建）→ 25%（提示词优化完成）→ 60%（素材生成完成）→ 80%（质检通过）→ 100%（格式适配 + 上传）。每个阶段由对应节点触发回调。
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</Item>
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<Item title="双通道推送">
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**WebSocket**：`ws://host/api/v1/tasks/:taskId/ws`，实时推送进度和结果。**HTTP 轮询**：`GET /api/v1/tasks/:taskId`，兼容降级方案。
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</Item>
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</v-clicks>
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<div class="flex justify-center mt-2">
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<img src="../public/async-task.svg" class="w-full max-h-[180px] object-contain" />
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</div>
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