App Engine's future
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Luca Matteis
Jul 7, 2011, 12:27:30 PM7/7/11
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I currently work for a non-profit organization and I really like hacking around with App Engine for my personal projects, but would like to also show its power at work. One thing my boss needs though, is assurance that a hosting service can provide reliability. With the recent removal of the "Business plan", I'm a bit worried that my boss won't take my word on how great App Engine really is. My boss needs to see that 99.x% uptime figure somewhere, he wants support in case things screw up and I was really excited because I thought that's where the Business plan was going, but it's not there anymore.
Would you be able to share your opinions on where App Engine is going so that I could convince my boss in using it?
Thanks a lot!
Luca
Ikai Lan (Google)
Jul 8, 2011, 2:44:41 PM7/8/11
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App Engine is coming out of preview. That's the reasons we removed the "business" option: we are providing the 99.9% SLA for EVERYONE who deploys using High Replication datastore. We also did not want to restrict the SLA or support options for Google Apps customers.
For more information, read this post here:
Ikai Lan
Developer Programs Engineer, Google App Engine
Twitter: http://twitter.com/app_engine
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Ronoaldo José de Lana Pereira
Jul 8, 2011, 2:53:03 PM7/8/11
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Ikay,
You said "for everyone who deploys using High Replication datastore". Is this a hint that the Master/Slave will be discontinued when AppEngine leaves preview?
I know that you and the AppEngine team are very busy, but are you planning to build tools to help us migrate a live app from MS to HR? My app has around 5G of stored data, and is heavily used all day (around 150 reqs/sec), so there is almost no room for a downtime migration period if that takes too long to complete. Does it takes too long or is there any way to ask for help when migrating this so it will be faster? Also, we had the bad idea to store the encoded key strings to reference other objects in the datastore. If we migrate the app from one appid to another, all those references will break, right? Can we do something like migrate the storage but keep the appid? That wold be great!
Thanks,
Ronoaldo
Ikai Lan (Google)
Jul 8, 2011, 3:02:38 PM7/8/11
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Yes, we absolutely are building tools to allow self service migrations. However, there will be downtime. I don't think there is any way around this unless you are willing to accept data loss (the data that is written to the M/S app while the migration is happening that is not copied over). Fortunately, the downtime can be minimized to under a few hours.
We will not disable applications on master/slave. We just cannot provide an SLA for master/slave apps. In the long term, we *may* disable the option to create new master/slave applications.
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Ikai Lan (Google)
Jul 8, 2011, 3:04:05 PM7/8/11
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If you store keys, I believe the migration tools should deal with this case. The issue is if you take the keys and encode them again - we have no way of knowing your encoding scheme.
For 5 gigabytes of data, the downtime should be minimal.
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