getTraceKey example

$this->traces = [];
            // Keep a clone of the original request for surrogates so they can access it.             // We must clone here to get a separate instance because the application will modify the request during             // the application flow (we know it always does because we do ourselves by setting REMOTE_ADDR to 127.0.0.1             // and adding the X-Forwarded-For header, see HttpCache::forward()).             $this->request = clone $request;
            if (null !== $this->surrogate) {
                $this->surrogateCacheStrategy = $this->surrogate->createCacheStrategy();
            }
        }

        $this->traces[$this->getTraceKey($request)] = [];

        if (!$request->isMethodSafe()) {
            $response = $this->invalidate($request, $catch);
        } elseif ($request->headers->has('expect') || !$request->isMethodCacheable()) {
            $response = $this->pass($request, $catch);
        } elseif ($this->options['allow_reload'] && $request->isNoCache()) {
            /* If allow_reload is configured and the client requests "Cache-Control: no-cache", reload the cache by fetching a fresh response and caching it (if possible). */
            $this->record($request, 'reload');
            

$this->traces = [];
            // Keep a clone of the original request for surrogates so they can access it.             // We must clone here to get a separate instance because the application will modify the request during             // the application flow (we know it always does because we do ourselves by setting REMOTE_ADDR to 127.0.0.1             // and adding the X-Forwarded-For header, see HttpCache::forward()).             $this->request = clone $request;
            if (null !== $this->surrogate) {
                $this->surrogateCacheStrategy = $this->surrogate->createCacheStrategy();
            }
        }

        $this->traces[$this->getTraceKey($request)] = [];

        if (!$request->isMethodSafe()) {
            $response = $this->invalidate($request, $catch);
        } elseif ($request->headers->has('expect') || !$request->isMethodCacheable()) {
            $response = $this->pass($request, $catch);
        } elseif ($this->options['allow_reload'] && $request->isNoCache()) {
            /* If allow_reload is configured and the client requests "Cache-Control: no-cache", reload the cache by fetching a fresh response and caching it (if possible). */
            $this->record($request, 'reload');