Explaining an index structure of Google Cloud Datastore as well as underlying components such as Google File System (Colossus), Bigtable and Megastore. Session video (Japanese) https://youtu.be/H-tZUZGBo60?t=8524 2016/11/08 ver1.0 Published 2016/11/11 ver2.0 Add notes on Spanner 2017/02/09 ver2.1 Fix on Spanner's consistency description.
![Google Cloud Datastore Inside-Out](https://cdn-ak-scissors.b.st-hatena.com/image/square/d120ac153dd766fb41fe944ab8f46f5c43ef86d3/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fgoogleclouddatastoreinside-out-161107062057-thumbnail-4.jpg%3Fcb%3D1486632809)