"Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
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Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#2We had consistent serious problems related to EBS for a several-month streak about a year ago, and I heard almost identical stories from other EC2 users around the same time. Instances with EBS attached would suddenly become completely unreachable via the network. Sometimes we had to terminate the instances, but usually we could revive them by detaching all (or most) of the EBS volumes, then reattaching and rebooting. Amazon seems to have fixed this problem, but I wouldn't be surprised if we suffered in the future the way reddit has.
Overall, EC2 is a very impressive offering, for which I commend Amazon. At times, I've been so frustrated that I'm ready to switch, but they fix things just quickly enough that I never quite get around to it. In the end, I'm willing to accept that what they're doing is hard, there will be mistakes, and it's worth suffering to get the flexibility and cost-effectiveness that EC2 offers.
Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#3The AWS business model is to sell shared hosting on commodity hardware. Cloud is a cool buzzword but it is still sharing hardware. Cheap, commodity hardware is the magic that lets you scale up so big and so fast for a highly accessible price.
But you're still sharing the same hardware as everyone else and its still just commodity hardware.
Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#4We had consistent serious problems related to EBS for a several-month streak about a year ago, and I heard almost identical stories from other EC2 users around the same time. Instances with EBS attached would suddenly become completely unreachable via the network. Sometimes we had to terminate the instances, but usually we could revive them by detaching all (or most) of the EBS volumes, then reattaching and rebooting…
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Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#5[deleted]
Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#6This comment further down, supposedly from an Amazon employee, paints a grim picture for EBS: http://www.reddit.com/r/blog/comments/g66f0/why_reddit_was_d...
Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#7Why is reddit relying on only one cloud provider? AWS can/should do better but service providers of the size of reddit should be using mult-vendor set-ups for sure.
Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
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Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#9Why is reddit relying on only one cloud provider? AWS can/should do better but service providers of the size of reddit should be using mult-vendor set-ups for sure.
It probably has something to do with the group being very small. Sure they turn a lot of traffic, but there's only so much you can do with a group of their size on what I imagine is still a limited budget.
Re: "Amazon's EBSs are a barrel of laughs in terms of performance and reliability"
#10We were bitten by EBS' slowness at my company recently, when moving an existing project to AWS. You effectively can't get decent performance off of a single EBS volume with PostgreSQL; you need to set up 10 or so of them and make a software RAID to remove the bottleneck. It's a fairly large time commitment to build and maintain, but it's pretty fast and reliable once it's up and running (cases like the recent downtime notwithstanding).
Can anyone tell me if MySQL fares any better than Postgres on a single EBS volume? I wouldn't assume it does but I shouldn't be making assumptions.