Source: https://daphnislabs.com/services/software-architecture

# Software Architecture Services

Architecture design and review for new products and evolving systems, turning requirements into explicit boundaries, contracts and technical decisions.

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**Application**

**Request API**

Asynchronous boundary

**Job queue**

**Export worker**

Receipt and download status return to the app

## Tools & technologies

-   C4 diagrams
-   API contracts
-   Data modelling
-   Architecture decision records

## Make the hard boundaries visible.

### New product architecture

Choose a practical system structure around workflows, constraints and delivery capacity.

### System evolution

Plan how a growing application separates responsibilities without disrupting users.

### Integration design

Define ownership, failure behavior and compatibility between services.

## Separate a slow export workflow

Capability Example

Large report exports delay an otherwise responsive application.

### Measure

### Design

### Validate

Illustrative data. Nothing is sent to an external system.

Example workspace 1 / 3

### Request trace

```
Export blocks application response
Inputs and owner identified
Slow operation isolated
```

Trace request time and identify the blocking work.

### Job boundary

```
Export queued with stable job ID
Result stored in private location
Application shows job status
```

Move export generation to a job with owned inputs and a result location.

### Prototype evidence

```
Cancellation tested
Retries do not duplicate output
Download access enforced
```

Prototype cancellation, retries and access to completed files.

A bounded change with a job contract and rollout steps, rather than an untested system-wide rewrite.

Follow the record through the next step

## Decisions the implementation team can use.

-   **System and data-flow diagrams**
-   **Architecture decision records**

-   **Interface and ownership contracts**
-   **Incremental implementation roadmap**

## Set the decision's scale before drawing services.

### Constraints

Document budget, team capacity, availability and data requirements before choosing a topology.

### Evidence

Use measurements and a small prototype to test consequential assumptions.

## Questions before we start.

### Does architecture consulting include implementation?

It can. Design deliverables and implementation milestones are scoped separately so the team knows what will be built.

### Do you recommend microservices by default?

No. A modular application may be the better fit. Service separation needs an operational or ownership reason.

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## Bring your starting point.

Share your system diagram, current bottleneck and the constraints that cannot change.

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