Wiki Article · Cinematic

Asynchronous job

Asynchronous job (ya background job) ek aisa kaam hota hai jo aap user ke request ke same moment me…

Overview

Asynchronous job — Quick Facts

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Field: Value

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Topic type: System design / scalability…

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Primary goal: user-facing latency reduce +…

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Typical triggers: API request, event, schedule/cron…

Topic 1

Infobox

📚 | Field | Value | |---|---| | Topic type | System design / scalability pattern…

Topic 2

Overview

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API / app "job" create karti hai…

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job queue me store hota hai…

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background worker job ko pick…

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user ko jaldi response de sakte ho

Topic 3

Why asynchronous jobs exist

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request path me heavy work user…

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third-party calls unreliable hon…

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aapko spikes handle karne hon…

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aapko long-running tasks run karni…

Topic 4

Job vs request/response (concept)

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user request aayi

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server ne kaam kiya

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response bhej diya

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user request aayi

Topic 5

Typical architecture (producer, queue, worker)

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Producer: app code jo job enqueue…

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Queue/Broker: durable buffer…

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Worker/Consumer: background…

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Result store: DB/object storage…

Topic 6

Delivery semantics, retries, and idempotency (concept)

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At-least-once delivery common hota…

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Isliye worker logic ko idempotent…

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transient error => retry with…

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permanent/poison job => move to DLQ

Topic 7

Scheduling vs event-driven jobs (concept)

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Scheduled (cron-like): daily…

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Event-driven: "order placed",…

Topic 8

Monitoring and operations (concept)

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queue depth / backlog (kitne jobs…

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processing rate (throughput)

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worker error rate

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retry counts

Topic 9

Security considerations (concept)

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job payload me sensitive data…

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secrets (API keys) payload me…

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workers ko least-privilege…

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logs me PII/credentials leak mat…

Topic 10

Common mistakes (beginner)

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Job handlers idempotent nahi…

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Retry without backoff (thundering…

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Infinite retries without DLQ…

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Job payload me huge data bhejna…

Topic 11

Limitations and tradeoffs (concept)

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Complexity increase: queue, worker…

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Consistency: user ko immediate…

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Debugging: distributed async flows…

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Ordering guarantees tough…

Topic 12

Responsibilities table (table)

⭐ | Component | Responsibility (simple) | Failure risk | |---|---|---| | Producer (API/app)…

Topic 13

Failure modes table (table)

🔑 | Failure mode (concept) | Example | Mitigation (concept) | |---|---|---| | Duplicate…

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Glossary

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Job: background task unit (concept)

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Queue: pending jobs ka buffer…

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Worker: process/service jo jobs…

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Producer: job enqueue karne wala…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

Asynchronous job ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

Asynchronous job ka 'Topic type' kya hai?

Complete! 🎉

Asynchronous job Complete!

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