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Much is made of the CAP trade-off for data storage where conflicts can be introduced if there is a network partition.
My question is there any evidence that this is a problem that arises with any significant frequency in modern cloud IAAS services e.g.; EC2, Azure, Rackspace.
Is it a problem which, despite being a theoretical roadblock in constructing idealised distributed systems is, in fact, a non-issue for all practical concerns?
Has anyone experienced a network partition within one of these systems (within a single data-centre?) If so would you be willing to share any details?
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Currently cloud firestore spark or free plan provides 20k writes/day, 50k reads/day, 20k deletes/day.
What will happen if my spark plan of cloud firestore exceeds it's limit and I don't upgrade my plan?
Will my apps start using firestore offline database or will my account/project get disabled?
Any read/write/delete operation will return a 'resource-exhausted' error if you have utilized your free quota for the day. You'll have to wait until it resets.
Quotas are applied daily and reset around midnight Pacific time.
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I'm looking for an example how to connect my k8s in my (oracle) cloud with an database in the same cloud infrastructure but in another VCN and not to walk over the internet.
Any useful links?
You will need a local VCN peering between these two VCNs:
https://docs.cloud.oracle.com/en-us/iaas/Content/Network/Tasks/localVCNpeering.htm
Once you have it make sure security group (firewall rule) of DB instance is adjusted: DB instance allows incoming connections to DB port from the kubernetes node security group
https://docs.cloud.oracle.com/en-us/iaas/Content/Network/Concepts/networksecuritygroups.htm
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Obviously the difference is that one can and one cannot access Netflix. But how does Netflix ban VPNs while not catching VPNs designed specifically to access Netflix?
The main difference is the question of whether Netflix knows about them yet or not.
In time, the VPNs which can access Netflix today will likely end up being blocked by from accessing the service when Netflix's analysis of incoming connections reveals IP addresses which could belong to VPNs used to circumvent their restrictions.
It is possible that some operators of VPN services may make use of IP addresses which are changed periodically to make detection less likely and this is how they may go for an extended period of time without being blocked.
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Say I wish to have the interface eth0 to have a very low bandwidth. Is it possible?
As may be evident from the question, I am trying to simulate a network with varying bandwidths.
Note: I am using VirtualBox running Ubuntu to simulate the hosts.
There is a program in the Ubuntu repos that will throttle bandwidth on a process-by-process basis. It's called trickle. Here's another answer that deals with trickle. Hope that helps with your issue!
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i really want to know the essential differences between those filesystems, for example the inodes pointer Structure and so on!
Thank you
Ext2 is the first version of the filesystem created in 1993. It is stable and secure and can support volumes up to 4 TB. It doesn't have any form of journaling. It can be used for partitions that doesn't require journaling functions like boot partitions.
Ext3 is more secure and consistent compared to ext2. It has a journaling function that doesn't require a lot of disks access. It is quite slow compared to ext4. It can be used with file with high-variable dimension and server-files.
Ext4 have high performances compared to its predecessors. It uses RAM to optimize read/write operations limiting access time. It is suggested for desktop use but not so recommended for servers (considering its young age).