@app.get("/items/")
async def read_items(
    q: Annotated[
        Union[str, None], Query(min_length=3, max_length=50, pattern="^fixedquery$")
    ] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

@app.get("/items/")
async def read_items(
    q: Annotated[
        Union[str, None], Query(min_length=3, max_length=50, pattern="^fixedquery$")
    ] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

Gradle's _incremental build_ feature helps to avoid work that is already done, but once you re-execute a task, any previous results are forgotten.
When you are switching branches back and forth, the local results get rebuilt over and over again, even if you are building something that has already been built before.
The build cache remembers the earlier build results, and greatly reduces the need to rebuild things when they have already been built locally.

import org.gradle.performance.fixture.PerformanceTestIdProvider
import org.gradle.performance.results.CrossBuildPerformanceResults
import org.gradle.performance.results.CrossBuildResultsStore
import org.gradle.performance.results.WritableResultsStore
import org.junit.Assume
import org.junit.Rule

import static org.gradle.performance.results.ResultsStoreHelper.createResultsStoreWhenDatabaseAvailable

@CompileStatic

            description="Query string for the items to search in the database that have a good match",
            min_length=3,
        ),
    ] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

@app.get("/items/")
async def read_items(
    q: Annotated[
        str | None, Query(min_length=3, max_length=50, regex="^fixedquery$")
    ] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Annotated[Union[str, None], Query(min_length=3, max_length=50)] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Annotated[Union[str, None], Query(title="Query string", min_length=3)] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

import org.gradle.performance.measure.Duration;
import org.gradle.performance.measure.MeasuredOperation;
import org.gradle.performance.results.GradleProfilerReporter;
import org.gradle.performance.results.MeasuredOperationList;
import org.gradle.performance.results.OutputDirSelector;
import org.gradle.performance.results.OutputDirSelectorUtil;
import org.gradle.profiler.BenchmarkResultCollector;
import org.gradle.profiler.BuildMutator;

/**
 * Internal counterpart of {@link ResolutionOutputs} that exposes the results as
 * their internal types, as well as the raw results before conversion to user-facing types.
 */
public interface ResolutionOutputsInternal extends ResolutionOutputs {

    /**
     * Get the raw results of the resolution. The returned results are lazy. Calling
     * this method will not perform resolution.
     */