@RestController class HelloWorldController {     @GetMapping("/")     public String sayHello() {         return "hello world";     }      @GetMapping("/download")     public ResponseEntity<Resource> download() throws FileNotFoundException {         RateLimiter rateLimiter = GuavaRateLimiter.create(52428800L, 500, TimeUnit.MILLISECONDS)         FileInputStream in = new FileInputStream("/home/hujianxin/Downloads/officesp2010-kb2687455-fullfile-x64-en-us.exe");         InputStreamResource resource = new InputStreamResource(new InputStream() {             @Override             public int read() throws IOException {                 rateLimiter.acquire();                 return in.read();             }              @Override             public int read(byte[] b) throws IOException {                 rateLimiter.acquire(b.length);                 return in.read(b);             }              @Override             public int read(byte[] b, int off, int len) throws IOException {                 rateLimiter.acquire(len);                 return in.read(b, off, len);             }         });         return ResponseEntity.ok().body(resource);     } } 

在这个例子中，最大值是 50MB/S，但是实际速度只有 7M/s，如果移除限流相关代码，实际速度可以达到 200MB/s

有遇到过类似问题的大佬吗？