jezhumble

# Copyright 2019 Google LLC.
# SPDX-License-Identifier: Apache-2.0
# This snippet shows you how to use Blob.generate_signed_url() from within compute engine / cloud functions
# as described here: https://cloud.google.com/functions/docs/writing/http#uploading_files_via_cloud_storage
# (without needing access to a private key)
# Note: as described in that page, you need to run your function with a service account
# with the permission roles/iam.serviceAccountTokenCreator

import os, google.auth
from google.auth.transport import requests

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD