An API response or webhook delivery is a transport event, not proof that an analytical update is complete. Reliable integrations need explicit boundaries for pagination, validation, retries, identity and recovery.
This guide explains common API and event patterns that can be assessed during a Covorg partnership discussion. The examples describe general interface concepts. They are not published Covorg endpoints or a promise of support for a particular third party service.
Define the scope of an API read
Document the resource, selected fields, filters, pagination mechanism and observation boundary. If records can change during pagination, determine whether the API offers a stable cursor or snapshot semantics. Otherwise, the integration needs a strategy for overlapping reads and deduplication.
Keep a checkpoint that represents completed analytical processing, rather than merely the last successful HTTP response. A response may have arrived while its records failed validation or could not be persisted. Advancing too early can leave a gap that ordinary retries will not repair.
Apply retries according to operation semantics
HTTP defines idempotence in terms of the intended server effect of repeating a request. GET retrieves a representation, while automatically retrying a state changing request requires understanding its semantics. A network timeout does not establish whether the original operation took effect.
| Condition | Integration response | Evidence to retain |
|---|---|---|
| Temporary service failure | Use bounded retry with increasing delay | Attempt count and final disposition |
| Rate restriction | Respect documented provider guidance | Resume time and backlog |
| Invalid credentials | Stop and route an access issue | Sanitised error category |
| Invalid payload | Isolate the input for review | Schema version and validation reason |
| Duplicate delivery | Apply the defined identity rule | Original processing reference |
Separate webhook acceptance from processing
Verify the delivery using the provider’s documented mechanism, check the event type and accept only the events required. Persist a recoverable work item before acknowledging successful acceptance, then perform longer processing asynchronously when the provider’s contract allows it.
GitHub’s webhook guidance covers secrets, HTTPS, prompt acknowledgement and missed delivery recovery. Its specific acknowledgement deadline is provider specific. For every integration, confirm the actual delivery deadline, retry policy, identity behaviour and available mechanism for recovering missed events.
Use an event envelope with stable identity
CloudEvents defines common context attributes including id, source, specversion and type. The combination of source and id identifies a distinct event, allowing a consumer to recognise repeat deliveries. An envelope makes context consistent; it does not itself guarantee ordering or successful processing.
The simplified example below represents an invented order event. Business payload validation remains separate from envelope validation, and the source must define what this event means and how corrections are represented.
{
"specversion": "1.0",
"id": "evt00042",
"source": "/example/orders",
"type": "com.example.order.accepted",
"data": {
"orderId": "order0042",
"quantity": 3
}
}Event processing sequence
- 01
Verify
Validate the sender, allowed event type and envelope.
- 02
Persist
Store a recoverable input and its stable identity.
- 03
Process
Apply business validation and a duplicate safe update rule.
- 04
Reconcile
Track failures and compare delivered events with expected source activity.
Design considerations
- Confirm provider pagination, rate limits and missed delivery recovery before implementation.
- Avoid storing credentials or sensitive payload values in diagnostic logs.
- Define whether a repeated identity represents a retry or an invalid conflicting event.
Sources
The following sources explain the underlying technical patterns.
