CacheLoader<String, String> loader =
        new CacheLoader<String, String>() {
          @Override
          public String load(String key) throws Exception {
            return cache.get(key, identityLoader()); // recursive load, this should fail
          }
        };
    testLoadThrows(key, cache, loader);
  }

  public void testRecursiveLoadWithProxy() throws InterruptedException {
    String key = "key";

    `BufferedSink` and a `ResponseBody` as an Okio `BufferedSource`. Standard
    `InputStream` and `OutputStream` access is also available.

 *  **New Call and Callback types** execute requests and receive their
    responses. Both types of calls can be canceled via the `Call` or the
    `OkHttpClient`.

 *  **URLConnection support has moved to the okhttp-urlconnection module.**

Falcon is another high performance Python framework, it is designed to be minimal, and work as the foundation of other frameworks like Hug.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Example upgrade

Now modify the file `main.py` to receive a body from a `PUT` request.

Declare the body using standard Python types, thanks to Pydantic.

```Python hl_lines="2  7-10 23-25"
from fastapi import FastAPI
from pydantic import BaseModel

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Example upgrade { #example-upgrade }

Now modify the file `main.py` to receive a body from a `PUT` request.

Declare the body using standard Python types, thanks to Pydantic.

```Python hl_lines="2  7-10 23-25"
from fastapi import FastAPI
from pydantic import BaseModel

    ).isFalse()
    val call2 = client.newCall(Request(server.url("/")))
    val response2 = call2.execute()
    assertThat(response2.body.string()).isEqualTo("abc")
  }

  /** Wait for the client to receive `dataLength` DATA frames.  */
  private fun waitForDataFrames(dataLength: Int) {
    val expectedFrameCount = dataLength / 16384
    var dataFrameCount = 0
    while (dataFrameCount < expectedFrameCount) {

	for index := range onlineDisks {
		g.Go(func() error {
			if onlineDisks[index] == nil {
				return nil
			}
			return onlineDisks[index].Delete(ctx, bucket, pathJoin(object, dataDir), DeleteOptions{
				Recursive: true,
			})
		}, index)
	}

	return reduceWriteQuorumErrs(ctx, g.Wait(), objectOpIgnoredErrs, writeQuorum)
}

		d.copyWithChildren(src, dataUsageHash(ch), &hash)
	}
	if parent != nil {
		p := d.Cache[parent.Key()]
		p.addChild(hash)
		d.Cache[parent.Key()] = p
	}
}

// reduceChildrenOf will reduce the recursive number of children to the limit
// by compacting the children with the least number of objects.
func (d *dataUsageCache) reduceChildrenOf(path dataUsageHash, limit int, compactSelf bool) {
	e, ok := d.Cache[path.Key()]

  private static final class TimedTakeQueue {
    final BlockingQueue<String> queue;
    final Completion completed;

    /**
     * Creates a {@link EnableReads} which insert an element for a {@code take} to receive in {@code
     * countdownInMillis}.
     */
    static TimedTakeQueue createWithDelay(long countdownInMillis) {
      return new TimedTakeQueue(countdownInMillis);
    }

	ch := make(chan itemOrErr[string])

	go func() {
		defer xioutil.SafeClose(ch)

		// Allocate new results channel to receive ObjectInfo.
		objInfoCh := make(chan itemOrErr[ObjectInfo])

		if err := objAPI.Walk(ctx, minioMetaBucket, pathPrefix, objInfoCh, WalkOptions{}); err != nil {
			select {
			case ch <- itemOrErr[string]{Err: err}: