Sankalpsutra Tech
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EVENT-DRIVEN PLATFORMS

Build event-driven platforms with reliable queues, webhook reconciliation, and observability from day one

We design async systems for notifications, integrations, and workflow automation with durable messaging, retry policies, dead-letter handling, and tenant-aware delivery paths after discovery.

  • Queues and topics
  • Webhook reconciliation
  • Retry and DLQ handling
  • Multi-channel routing
  • Delivery observability

Event Pipeline Blueprint

Producer to delivery flow

Event producers

  • App services
  • Inbound webhooks
  • Schedulers

Event bus

  • Topics
  • Queues
  • Routing rules

Worker pool

  • Consumers
  • Retry policy
  • Concurrency controls

Channel adapters

  • Email
  • SMS
  • WhatsApp
  • Outbound webhooks

Observability

  • Metrics
  • DLQ inbox
  • Audit trail

WHY ASYNC SYSTEMS FAIL

Event-driven platforms fail when delivery guarantees and reconciliation are undefined

Most outages trace to duplicate events, silent worker failures, or integrations that never reconcile webhook state.

  • Events processed without idempotency

    Risk

    Duplicate charges, notifications, or workflow steps under retries and redeliveries.

    Architecture response

    Assign idempotency keys, dedupe stores, and exactly-once semantics at consumer boundaries.

  • Retry policies designed after production incidents

    Risk

    Poison messages loop forever or fail silently without a dead-letter path.

    Architecture response

    Define retry backoff, max attempts, and DLQ routing before high-volume traffic arrives.

  • Inbound webhooks not reconciled with internal state

    Risk

    External provider status and internal records drift apart during partial failures.

    Architecture response

    Model webhook ingestion, signature verify, and state reconciliation as explicit pipeline stages.

  • Ordering assumptions ignored across services

    Risk

    Downstream workflows execute out of sequence and corrupt business state.

    Architecture response

    Use partition keys, saga patterns, or versioned event schemas where order matters.

  • No visibility into queue depth or failed deliveries

    Risk

    Teams discover backlog issues only when customers report missing updates.

    Architecture response

    Instrument lag, failure rates, DLQ volume, and per-tenant delivery SLAs from launch.

  • Workers scaled without backpressure controls

    Risk

    Downstream APIs get overwhelmed and cascading failures spread across channels.

    Architecture response

    Apply rate limits, concurrency caps, and circuit breakers at adapter boundaries.

PLATFORM CAPABILITIES

Capabilities behind a production-ready event-driven platform

Each capability maps to an operational concern, not a message broker checkbox.

  • Event ingestion

    What it does

    Accept domain events, webhook payloads, and scheduled triggers into the bus.

    Why it matters

    Creates one durable entry point instead of ad hoc background scripts.

    • Webhooks
    • Domain events
    • Schedulers

  • Routing and topics

    What it does

    Route events to the right queues, topics, and consumer groups by type and tenant.

    Why it matters

    Keeps services decoupled while preserving clear ownership boundaries.

    • Topics
    • Queues
    • Tenant routing

  • Worker processing

    What it does

    Horizontally scaled consumers with retry, backoff, and concurrency controls.

    Why it matters

    Handles spikes without blocking user-facing request paths.

    • Consumers
    • Retry
    • Scaling

  • Channel adapters

    What it does

    Normalize delivery to email, SMS, WhatsApp, push, and partner webhooks.

    Why it matters

    Lets product teams add channels without rewriting core workflow logic.

    • Email
    • SMS
    • Webhooks

  • Webhook reconciliation

    What it does

    Match provider delivery receipts with internal message and billing state.

    Why it matters

    Prevents silent drift between external systems and your database.

    • Receipts
    • Idempotency
    • State sync

  • Dead-letter handling

    What it does

    Capture failed events, support replay, and operator triage workflows.

    Why it matters

    Turns unrecoverable failures into actionable ops work instead of data loss.

    • DLQ
    • Replay
    • Triage

  • Tenant-aware delivery

    What it does

    Per-tenant quotas, credentials, and routing rules for multi-tenant products.

    Why it matters

    Supports SaaS operators delivering notifications on behalf of customers.

    • Quotas
    • Credentials
    • Isolation

  • Delivery dashboards

    What it does

    Live views on throughput, failures, lag, and channel health by tenant.

    Why it matters

    Surfaces problems before customer support queues fill up.

    • Metrics
    • Alerts
    • Dashboards

ARCHITECTURE APPROACH

How we design event-driven platforms for dependable delivery

An event path with durable storage, explicit retry boundaries, and reconciliation before downstream side effects.

Event delivery path

Producer event

Durable queue

Consumer worker

Idempotency check

Business handler

Channel adapter

Status webhook

Audit log

  • Messaging backbone

    Queue or topic selection aligned to ordering, throughput, and ops maturity.

  • Idempotency layer

    Dedupe keys and consumer guards against duplicate side effects.

  • Workflow and sagas

    Multi-step processes with compensating actions when downstream steps fail.

  • Provider adapters

    Normalized interfaces for email, SMS, WhatsApp, and partner webhook targets.

  • Reconciliation jobs

    Periodic and event-driven checks that align external status with internal records.

  • Ops tooling

    DLQ inbox, replay controls, and tenant-level delivery reporting.

USE CASES

Event-driven systems we can design and build

Async workflows shaped in discovery, not fire-and-forget background jobs.

  • Notifications

    Multi-channel notification platform

    Email, SMS, WhatsApp, and webhook delivery with retries and tenant routing.

  • Webhooks

    Webhook ingestion hub

    Verify, dedupe, and route inbound provider events into domain workflows.

  • Billing

    Billing and subscription events

    Process payment webhooks, entitlement updates, and dunning workflows asynchronously.

  • Integrations

    Integration sync pipelines

    CRM, ERP, and partner sync jobs with backoff and reconciliation reports.

  • Operations

    Operations automation

    Background jobs for imports, exports, reports, and long-running business tasks.

  • Ingestion

    High-volume event ingestion

    Telemetry and activity streams with partitioned consumers and lag monitoring.

  • SaaS

    SaaS tenant event bus

    Per-tenant routing and quotas for products delivering events on customer behalf.

  • Modernization

    Monolith to async extraction

    Extract notification and integration workloads from synchronous request paths.

IMPLEMENTATION STRATEGY

What to build and what to integrate

Own routing, idempotency, reconciliation, and ops tooling. Integrate brokers and channel providers where they are commodity.

Build inside platform

  • Event schema and routing
  • Consumer workers
  • Idempotency and DLQ flows
  • Webhook reconciliation
  • Tenant delivery rules
  • Observability dashboards

Integrate

  • RabbitMQ, Kafka, or cloud bus
  • Email and SMS providers
  • WhatsApp or push vendors
  • Existing auth and tenant systems
  • APM and log platforms

TECHNOLOGY STRATEGY

A practical stack for event-driven platforms

Stack choices follow throughput, ordering needs, channel mix, and your team's operating model.

Backend

  • .NET
  • Node (project fit)

Messaging

  • RabbitMQ
  • Kafka
  • Azure Service Bus

Cache and dedupe

  • Redis
  • Idempotency store

Data

  • PostgreSQL
  • Event store
  • DLQ tables

Channels

  • Email
  • SMS
  • WhatsApp
  • Webhooks

Cloud

  • Azure
  • AWS

Integrations

  • CRM
  • Billing
  • Partner APIs

Observability

  • Lag metrics
  • DLQ alerts
  • Delivery audit

RELATED ARCHITECTURE EXAMPLES

Architecture patterns from similar systems

Production references for async delivery, webhook reconciliation, and multi-channel routing.

Planning an event-driven notification or integration platform?

We can review your event volumes, channel mix, reconciliation needs, and phased MVP scope before recommending the right messaging architecture.

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