System Integration Planning: APIs, Data and Ownership

اتبع التبادل من طرف إلى طرف.

اختر تبادلًا تمثيليًا، مثل نقل أمر من موقع ويب إلى تطبيق داخلي. قم بإدراج نظام الإرسال ونظام الاستقبال والحقول والمشغل. حدد النظام الذي يمتلك كل قيمة. إذا كان بإمكان نظامين تحديث نفس السجل، فقم بتوثيق كيفية معالجة التحديثات المتعارضة قبل إنشاء الواجهة.

تصميم للرسائل المتأخرة والمتكررة.

يمكن أن يتلقى التكامل نفس الطلب مرتين أو يفقد الاستجابة بعد أن يكمل المتلقي عمله. ناقش المعرفات وإعادة المحاولة والتسوية مع فريق التنفيذ. حدد كيفية رؤية المستخدمين للتبادل المعلق أو الفاشل، ومن يمكنه تصحيحه بأمان دون إنشاء سجلات عمل مكررة.

اجعل الواجهة قابلة للمراجعة.

قم بتسجيل أمثلة للمدخلات المقبولة والمرفوضة والاستجابات المتوقعة ومتطلبات الوصول. قم بتضمين عملية تغيير بحيث لا يتمكن أحد الأنظمة من كسر النظام الآخر بصمت. قم بمراجعة العقد مع كل من المالكين وممثلي الاختبار قبل النظر في التكامل الجاهز للاستخدام التشغيلي.

Walk through the life of an exchanged record

Choose one record, such as an order, and follow its creation, update, cancellation and correction. At every boundary, identify the sending system, receiving system and source of truth. Confirm the actual interface available rather than assuming that an application exposes the data you need.

Review authentication, field meanings, identifiers and expected timing with both owners. Test a duplicate message, a delayed update and an unavailable destination. Decide how to distinguish a rejected request from an uncertain outcome. Arrange reconciliation so the operating team can find records that disagree after an interruption. These decisions should be captured before implementation begins.

An interface contract planning sheet

This is a discussion template, not a substitute for the technical contract. Attach the relevant API specification or file format after the owners agree the behaviour.

• Purpose and direction: why the exchange occurs and which system initiates it.
• Record identity: stable identifiers, field definitions and ownership of each value.
• Trigger and timing: event, schedule, expected delay and ordering assumptions.
• Access and limits: authentication, permissions and constraints confirmed by the provider.
• Failure handling: timeouts, duplicates, retries, rejection reasons and human escalation.
• Verification: test examples, reconciliation checks, versioning and named support owners.

Do not equate a response with a completed business action

A successful technical response may acknowledge receipt without confirming that a downstream process finished. Agree what each status means and how completion is checked. Conversely, a timeout may leave an uncertain result, so retrying a consequential action without checking can create duplication.

Avoid relying on field names alone. Two systems may use the same label for different concepts. Keep mappings and interface changes visible to both teams, including who approves a breaking change.

Should an integration be real time?

Choose timing around the business need and the capabilities of the connected systems. A scheduled exchange may be sufficient for some tasks; others need an event-driven flow. Document the acceptable delay and recovery approach before choosing the implementation pattern.

ILLUSTRATIVE PLANNING EXAMPLE

Example: connecting orders and inventory

An order system sends confirmed purchases to inventory. Decide which system owns stock counts, when a reservation occurs and how cancellations reverse it. Ask what happens when the same message arrives twice or inventory is temporarily unavailable. Assign an owner to each interface and agree representative integration tests.

Create an interface sheet covering fields, triggers, permissions, duplicate handling and recovery. Confirm assumptions with both system owners before estimating the connection.

FURTHER READING

Official resources to explore

Explore the related official guidance below. The templates and examples are practical starting points to adapt to your own project.

• MDN: overview of HTTP