return "Release existing locks or wait for them to be released";
        case BUFFER:
            return "Reduce buffer usage or increase buffer pool size";
        case THREAD_POOL:
            return "Reduce concurrent operations or increase thread pool size";
        default:
            return "Check resource availability and retry";
        }
    }

    /**

 * of which connections to keep open for future use.
 *
 * @constructor Create a new connection pool with tuning parameters appropriate for a single-user
 * application. The tuning parameters in this pool are subject to change in future OkHttp releases.
 * Currently this pool holds up to 5 idle connections which will be evicted after 5 minutes of
 * inactivity.
 */
class ConnectionPool internal constructor(

        // choose when we reach this many
        choose := rand.Uint64() % total
        atTotal := uint64(0)
        for _, pool := range serverPools {
                atTotal += pool.Available
                if atTotal > choose && pool.Available > 0 {
                        return pool.Index
                }
        }
        // Should not happen, but print values just in case.

    }

    /**
     * Sets the thread pool.
     * @param threadPool The thread pool.
     * @return This builder instance.
     */
    public SuggesterBuilder threadPool(final ExecutorService threadPool) {
        this.threadPool = threadPool;
        return this;
    }

    /**
     * Sets the thread pool size.
     * @param threadPoolSize The thread pool size.
     * @return This builder instance.

		t.Fatalf("bytepool length invalid: got %v want %v", len(b), width)
	}
	if cap(b) != capWidth {
		t.Fatalf("bytepool cap invalid: got %v want %v", cap(b), capWidth)
	}

	bp.Put(b)

	// Fill the pool beyond the capped pool size.
	for i := uint64(0); i < size*2; i++ {
		bp.Put(make([]byte, bp.w, bp.wcap))
	}

	b = bp.Get()
	if len(b) != width {
		t.Fatalf("bytepool length invalid: got %v want %v", len(b), width)
	}

    public void testStatistics() throws Exception {
        long initialAllocated = bufferManager.getTotalAllocated();

        // Allocate regions larger than pool buffer size to force new allocations
        RdmaMemoryRegion region1 = bufferManager.getSendRegion(131072); // 128KB > 64KB pool size
        RdmaMemoryRegion region2 = bufferManager.getSendRegion(131072); // Another large allocation

		ctx := r.Context()
		select {
		case pool <- struct{}{}:
			defer func() { <-pool }()
			globalHTTPStats.addRequestsInQueue(-1)
			if contextCanceled(ctx) {
				w.WriteHeader(499)
				return
			}
			f.ServeHTTP(w, r)
		case <-r.Context().Done():
			globalHTTPStats.addRequestsInQueue(-1)
			// When the client disconnects before getting the S3 handler

}

// Close - releases the resources used by the pool.
func (target *RedisTarget) Close() error {
	close(target.quitCh)
	if target.pool != nil {
		return target.pool.Close()
	}
	return nil
}

func (target *RedisTarget) init() error {
	return target.initOnce.Do(target.initRedis)
}

func (target *RedisTarget) initRedis() error {
	conn := target.pool.Get()
	defer conn.Close()

 1. It uses the URL and configured OkHttpClient to create an **address**. This address specifies how we'll connect to the webserver.
 2. It attempts to retrieve a connection with that address from the **connection pool**.
 3. If it doesn't find a connection in the pool, it selects a **route** to attempt. This usually means making a DNS request to get the server's IP addresses. It then selects a TLS version and proxy server if necessary.

> **NOTE:** **Each pool you add must have the same erasure coding parity configuration as the original pool, so the same data redundancy SLA is maintained.**