Chapter III · Area 11 of 12
The Question for Our ShopWhat does it cost when the shipping module reads order tables directly?
Here you will find procedures with which you test architecture and develop it step by step.
7 Building blocks
Starting hereTrade-off analysisHow does the team compare options?
A review follows order B-1042 through an outage of the payment connection and records the consequences and risks of each option.
How does the structure stay healthy?
The shipping module reads order tables directly; an automated test flags every new direct access, and known paths get a removal deadline.
How is the system restructured step by step?
Only invoice search moves to a new service; the invoice ID for orders is first created as optional, then made mandatory.
Known names – and where they are
Trade-off analyses and reviews assess options and risks. Fitness functions check architecture rules continuously; debt and erosion show different causes of follow-on costs. Strangler migration and data migration carry out larger changes step by step.
Here you clarify what it costs when the shipping module reads order tables directly. From this you derive option comparisons, automated checks and step-by-step restructuring. Each building block shows its theme at our shop.
This is what you learnYou can compare architectural variants based on concrete goals, boundary conditions and long-term consequences.
In the shopThe shop checks a modular monolith structure and independently provided services. The team compares change autonomy with operational and network effort.
Trade-off analysis OpenThis is what you learnYou can tailor an architecture review to specific quality goals, flows, risks and testable findings.
In the shopThe team tracks the order completion in the event of a delayed payment response. It checks status model, resumption, data durability and operational indicators.
Architecture review OpenThis is what you learnYou can prioritize technical debt based on its concrete consequences and expected change costs.
In the shopThe shipping module reads order tables directly. Any change to the status field requires manual tuning and causes recurring error checks.
Technical debt OpenThis is what you learnYou can distinguish newly emerging architectural deviations from known violations and set a verifiable degradation rule.
In the shopShipping has a baseline with two known direct order accesses. A test marks each newly added dependency; the known paths have responsible persons and degradation cut-off date.
Architecture erosion OpenThis is what you learnYou can formulate an architectural property as an automated, meaningful audit with a defined scope.
In the shopThe shop maintains dependencies between order, shipping and invoice modules within defined module contracts. An automatic test marks unauthorized database accesses.
Fitness functions OpenThis is what you learnYou can gradually replace an existing ability and set measurement points and a way back for the transition.
In the shopVariant: The shop only directs the bill search to a new service. Ordering and payment remain in the modular monolith; routing can be deferred for search.
Strangler migration OpenThis is what you learnYou can break down a schema change into compatible steps that safely operate parallel versions.
In the shopThe shop adds an invoice identifier for orders. First, the column is optionally created, then filled by the application and only later mandatory read.
Data migration OpenThese areas are technically directly related to Evolution & assessment together.