When building or using an Application Programming Interface (API), one important consideration is the number of methods it contains. This directly impacts the functionality and complexity of the API. But how exactly should method count be evaluated? Here are some key points:
What is a Method in API Context
First, let's define what constitutes a method. In API design, a method typically refers to an endpoint that enables accessing or manipulating data and resources. For example:
GET /users
POST /users
GET /users/123
PUT /users/123
DELETE /users/123Each of these endpoints would count as a separate method. The unique URI path and HTTP verb combination delineates the methods.
Why Method Count Matters
The number of methods relates directly to scope and capabilities of an API. More methods indicate wider functional coverage and more options for clients. However, too many convoluted methods can overwhelm developers and make the API harder to use.
As a rule of thumb, simpler and more focused APIs tend to be easier for clients to adopt. Though simpler isn't always better if key functionality is missing. Finding the right balance is key.
Typical Range
For internal APIs, method count can vary wildly based on the specific system and integration requirements. But for public APIs aimed at third-party developers, some reasonable benchmarks:
There are certainly exceptions on both ends, but this provides a rough estimate.
Considering Use Context
Rather than just the raw number alone, it's also important to consider the context:
Evaluating these factors helps put method count in perspective.
Tracking Over Time
Looking at method count growth over versions also provides useful signal on API evolution and "code health". Rapid unfettered growth might indicate lack of governance and architectural issues. Gradual controlled growth is more sustainable.
Conclusion
Method count serves as a useful yardstick for API design decisions, but should be applied with nuance rather than as a blunt rule. As with many things in technology, reasonable balance based on use context is the right path.