// In the WebDev project initialization (Server code) HDescribeReplication("CloudDB", "CUSTOMER", "Replication_ON_PREMISE") HReplicationCreate("CloudDB", "CUSTOMER", "Product_Table", "127.0.0.1", "MasterDB") HFSQL replication uses delta packets. It is 1,000x faster than CSV exports. Only new/modified records travel over the wire. 4. Step 2: The Real-Time Transaction Queue (The "Transactional" Lane) For high-write data (Orders, Inventory Movements), replication can cause conflicts. Use an Outbox pattern .
When a user validates an order, do not call the API directly (network failures would block the user). Write to a local Outbox table first. windev magazine
// In the "Page header" (Server code) PROCEDURE ReceiveOrder(payload is string) // Validate JWT token (Security) IF Not ValidateToken(HeaderToJSON()) THEN RETURN 401 END // Decode JSON OrderInfo is JSONObject = JSONParse(payload) // In the WebDev project initialization (Server code)
// Download new cloud orders HTTPRequest("https://cloud.myapp.com/api/v1/pull?since=" + LastSyncDate) JsonArray = JSONParse(Request.Body) FOR EACH JsonElement OF JsonArray Local_CloudOrder.ID = JsonElement.ID IF HReadSeekFirst(Local_CloudOrder, ID, JsonElement.ID) = False THEN Local_CloudOrder = JsonElement HAdd(Local_CloudOrder) END END In hybrid sync, conflicts are inevitable. Do not use "Last write wins." When a user validates an order, do not