[google-appengine] Re: How many times did Google Apps Engine went down since it's launch
I haven't seen any downtime since I moved to the HR datastore. I run my entire (small) business on Appengine now, and am very comfortable with that decision. Having said that, it depends on your application. If it is a general business app, then you'll be fine on Appengine. But if people or your business will die if it goes down for ten minutes, you need to make other (very expensive) arrangements. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
[google-appengine] Re: How many times did Google Apps Engine went down since it's launch
What do you mean by HR? What I meant is , If I have application hosted in Google Apps Engine , will it be affected in the future for example due to data center crash like what happened before. We will need this application be available starting from 7 AM to 1 PM Cairo time. because of this I am asking about the crash time in Google Apps engine. I am asking this because my manager wanna be sure our app won't be available for use. (internal and external). Also I heard that Google apps engine was down many times and according to this many companies changed the host from Apps engine to another PAAS provider. Another reason for my question is I suggested to develop over Google Apps Engine for our Customers , but also I told Our management that we can not trust Google Apps Engine to do this for now , because as you know and correct me if I am wrong (Google don't care much about Apps Engine Support) so my question will be now , can I trust Google Apps engine to use it for our Clients? in case of yes or no please tell me reasons for your answer. On Oct 6, 7:50 pm, Joshua Smith wrote: > Depends how you define "down." > > If you only consider HR, it hasn't gone completely down ever. Some bugs have > happened (like losing the ability to send mail to gmail addresses with .'s in > them) which reduced functionality for HR, and there have been times when you > could not update your app. But I don't think HR has ever stopped serving > since it was introduced. > > M/S has been down lots of times, sometimes for extended periods. But that's > irrelevant if you are using HR, which you should be if you care about > downtime. > > -Joshua > > On Oct 6, 2011, at 1:42 PM, ahmed adel wrote: > > > > > > > > > I need to know how many time did Google apps engine went down since > > launching this service also I need to know for how many hours and what > > is the time exactly. > > > Also I need to know your opinion about the below. > > > We are planning to develop a product over Google apps engine , a big > > project actually for our company. > > > so should I start using Google apps engine or should I use another > > PAAS and if so what is the recommended PAAS. > > > thx > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appengine@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com. > > For more options, visit this group > > athttp://groups.google.com/group/google-appengine?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
[google-appengine] Re: How many times did Google Apps Engine went down since it's launch
Joshua, your calculation is wrong. A year has 8760 hours, 0.05% of that time the service can be down -> 8760 * 0.0005 = 4.38 hours of downtime. On Oct 8, 7:52 pm, Joshua Smith wrote: > Google had a lot of trouble with their original database, known as M/S. It > was responsible for the downtime you heard about. > > So they invented a new database, known as HR, and it has never gone down > since they released it. > > So if you use HR (which is the default for new projects), history suggests > that you will not see outages. > > But be realistic: Everything goes down. Everything. There is no 100% uptime > guarantee. Google is promising 99.95% which means they are OK with 438 hours > of downtime a year. And that's only a soft promise (like most SLAs, your > recourse is negligible if you suffer losses because of their failures). > > I'm quite sure that GAE on HR has better uptime than I could achieve with > anything I could build and manage. > > On Oct 8, 2011, at 11:42 AM, ahmed adel wrote: > > > > > > > > > What do you mean by HR? > > > What I meant is , If I have application hosted in Google Apps Engine , > > will it be affected in the future for example due to data center crash > > like what happened before. > > > We will need this application be available starting from 7 AM to 1 PM > > Cairo time. because of this I am asking about the crash time in Google > > Apps engine. > > > I am asking this because my manager wanna be sure our app won't be > > available for use. (internal and external). > > > Also I heard that Google apps engine was down many times and according > > to this many companies changed the host from Apps engine to another > > PAAS provider. > > > Another reason for my question is I suggested to develop over Google > > Apps Engine for our Customers , but also I told Our management that we > > can not trust Google Apps Engine to do this for now , because as you > > know and correct me if I am wrong (Google don't care much about Apps > > Engine Support) > > > so my question will be now , can I trust Google Apps engine to use it > > for our Clients? in case of yes or no please tell me reasons for your > > answer. > > > On Oct 6, 7:50 pm, Joshua Smith wrote: > >> Depends how you define "down." > > >> If you only consider HR, it hasn't gone completely down ever. Some bugs > >> have happened (like losing the ability to send mail to gmail addresses > >> with .'s in them) which reduced functionality for HR, and there have been > >> times when you could not update your app. But I don't think HR has ever > >> stopped serving since it was introduced. > > >> M/S has been down lots of times, sometimes for extended periods. But > >> that's irrelevant if you are using HR, which you should be if you care > >> about downtime. > > >> -Joshua > > >> On Oct 6, 2011, at 1:42 PM, ahmed adel wrote: > > >>> I need to know how many time did Google apps engine went down since > >>> launching this service also I need to know for how many hours and what > >>> is the time exactly. > > >>> Also I need to know your opinion about the below. > > >>> We are planning to develop a product over Google apps engine , a big > >>> project actually for our company. > > >>> so should I start using Google apps engine or should I use another > >>> PAAS and if so what is the recommended PAAS. > > >>> thx > > >>> -- > >>> You received this message because you are subscribed to the Google Groups > >>> "Google App Engine" group. > >>> To post to this group, send email to google-appengine@googlegroups.com. > >>> To unsubscribe from this group, send email to > >>> google-appengine+unsubscr...@googlegroups.com. > >>> For more options, visit this group > >>> athttp://groups.google.com/group/google-appengine?hl=en. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appengine@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com. > > For more options, visit this group > > athttp://groups.google.com/group/google-appengine?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
[google-appengine] Re: How many times did Google Apps Engine went down since it's launch
On 8 Okt., 17:42, ahmed adel wrote:
> What do you mean by HR?
"High Replication" the recommended setup introduced about 8 Months
ago.
We switched a internal Application from a single Server hosted at
Rackspace to AppEngine.
Below you can see an analysis of a very expensive (->slow) internal
page.
We are testing from 12 Locations around the globe. See percentage of
requests which didn't
return success within 10 seconds:
http://static.23.nu/md/Pictures/reachability_6E56359C.png
And second: latency of that page:
http://static.23.nu/md/Pictures/latency_0985D51B.png
Can you tell what day we switched to AppEngine? It is an incredibly
useful product and I trust it much more than servers being run by
myself.
There are occasionally issues where you can't reprogram ("deploy") app
engine for a few hours. That is annoying. but user facing stability of
HR applications is great.
--md
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[google-appengine] Re: How many times did Google Apps Engine went down since it's launch
Ahmed, maybe this could help you a little bit http://code.google.com/status/appengine -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/Lk0GRVfJSUYJ. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
Re: [google-appengine] Re: How many times did Google Apps Engine went down since it's launch
Close enough! On 11-10-08 02:15 PM, Philip wrote: Joshua, your calculation is wrong. A year has 8760 hours, 0.05% of that time the service can be down -> 8760 * 0.0005 = 4.38 hours of downtime. On Oct 8, 7:52 pm, Joshua Smith wrote: Google had a lot of trouble with their original database, known as M/S. It was responsible for the downtime you heard about. So they invented a new database, known as HR, and it has never gone down since they released it. So if you use HR (which is the default for new projects), history suggests that you will not see outages. But be realistic: Everything goes down. Everything. There is no 100% uptime guarantee. Google is promising 99.95% which means they are OK with 438 hours of downtime a year. And that's only a soft promise (like most SLAs, your recourse is negligible if you suffer losses because of their failures). I'm quite sure that GAE on HR has better uptime than I could achieve with anything I could build and manage. On Oct 8, 2011, at 11:42 AM, ahmed adel wrote: What do you mean by HR? What I meant is , If I have application hosted in Google Apps Engine , will it be affected in the future for example due to data center crash like what happened before. We will need this application be available starting from 7 AM to 1 PM Cairo time. because of this I am asking about the crash time in Google Apps engine. I am asking this because my manager wanna be sure our app won't be available for use. (internal and external). Also I heard that Google apps engine was down many times and according to this many companies changed the host from Apps engine to another PAAS provider. Another reason for my question is I suggested to develop over Google Apps Engine for our Customers , but also I told Our management that we can not trust Google Apps Engine to do this for now , because as you know and correct me if I am wrong (Google don't care much about Apps Engine Support) so my question will be now , can I trust Google Apps engine to use it for our Clients? in case of yes or no please tell me reasons for your answer. On Oct 6, 7:50 pm, Joshua Smith wrote: Depends how you define "down." If you only consider HR, it hasn't gone completely down ever. Some bugs have happened (like losing the ability to send mail to gmail addresses with .'s in them) which reduced functionality for HR, and there have been times when you could not update your app. But I don't think HR has ever stopped serving since it was introduced. M/S has been down lots of times, sometimes for extended periods. But that's irrelevant if you are using HR, which you should be if you care about downtime. -Joshua On Oct 6, 2011, at 1:42 PM, ahmed adel wrote: I need to know how many time did Google apps engine went down since launching this service also I need to know for how many hours and what is the time exactly. Also I need to know your opinion about the below. We are planning to develop a product over Google apps engine , a big project actually for our company. so should I start using Google apps engine or should I use another PAAS and if so what is the recommended PAAS. thx -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group athttp://groups.google.com/group/google-appengine?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group athttp://groups.google.com/group/google-appengine?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
RE: [google-appengine] Re: How many times did Google Apps Engine went down since it's launch
Josh lives on a planetoid most of the way to Neptune so his year is longer than the rest of us. SLA is really only worth something if it is monetarily backed. Hopefully your hosting cost is not greater than your operational income. If Hosting is 5% of your total budget on a site making $100k a year each hour of downtime costs $11. 4 hours costs $44. If someone else has 99.99% uptime then down time costs $4 a year. In both of these cases the refund based on the SLA being exceeded by 48 due to catastrophic failure (like Amazon had a while back) is going to be Pennies. Take this to an enterprise level... Like at say Howcast.com that was a former employer, 50-ish employees Hosting was about 1% of their budget, much of their revenue came from Promoted content that was released on a schedule. Missing a deployment or being down for 48 hours during the launch of a campaign could have cost 100s of Thousands of dollars. For this reason I look much less at the SLA, and far more at the reputation and track record. (and I always have a hot spare ready to fail over to. If you want to make sure your APP stays up during "the end times", make sure that you have designed it to have at least read only functionality in the event that the service drops in to that mode. HR isn't supposed to but I predict once in the next 2 years it will happen that HR has 6 hours of read only time. Deploy a duplicate version of your app on MS, do enough syncs that this could operate when HR is down. So far outages have been on either MS or HR not both. Route all GoogleBot traffic through a Caching proxy, so that all of your indexed pages exist in a static form on a Non-GAE service. There are other advantages to this technique as well, so I would recommend this even if you aren't just optimizing for up time. -Original Message- From: google-appengine@googlegroups.com [mailto:google-appengine@googlegroups.com] On Behalf Of Philip Sent: Saturday, October 08, 2011 11:16 AM To: Google App Engine Subject: [google-appengine] Re: How many times did Google Apps Engine went down since it's launch Joshua, your calculation is wrong. A year has 8760 hours, 0.05% of that time the service can be down -> 8760 * 0.0005 = 4.38 hours of downtime. On Oct 8, 7:52 pm, Joshua Smith wrote: > Google had a lot of trouble with their original database, known as M/S. It was responsible for the downtime you heard about. > > So they invented a new database, known as HR, and it has never gone down since they released it. > > So if you use HR (which is the default for new projects), history suggests that you will not see outages. > > But be realistic: Everything goes down. Everything. There is no 100% uptime guarantee. Google is promising 99.95% which means they are OK with 438 hours of downtime a year. And that's only a soft promise (like most SLAs, your recourse is negligible if you suffer losses because of their failures). > > I'm quite sure that GAE on HR has better uptime than I could achieve with anything I could build and manage. > > On Oct 8, 2011, at 11:42 AM, ahmed adel wrote: > > > > > > > > > What do you mean by HR? > > > What I meant is , If I have application hosted in Google Apps Engine > > , will it be affected in the future for example due to data center > > crash like what happened before. > > > We will need this application be available starting from 7 AM to 1 > > PM Cairo time. because of this I am asking about the crash time in > > Google Apps engine. > > > I am asking this because my manager wanna be sure our app won't be > > available for use. (internal and external). > > > Also I heard that Google apps engine was down many times and > > according to this many companies changed the host from Apps engine > > to another PAAS provider. > > > Another reason for my question is I suggested to develop over Google > > Apps Engine for our Customers , but also I told Our management that > > we can not trust Google Apps Engine to do this for now , because as > > you know and correct me if I am wrong (Google don't care much about > > Apps Engine Support) > > > so my question will be now , can I trust Google Apps engine to use > > it for our Clients? in case of yes or no please tell me reasons for > > your answer. > > > On Oct 6, 7:50 pm, Joshua Smith wrote: > >> Depends how you define "down." > > >> If you only consider HR, it hasn't gone completely down ever. Some bugs have happened (like losing the ability to send mail to gmail addresses with .'s in them) which reduced functionality for HR, and there have been times when you could not update your app. But I don't think HR has ever stopped serving since it was introduced. >
