python-noob - which container is appropriate for later exporting into mySql + matplotlib ?

someone newsboost at gmail.com
Sat Apr 13 15:25:08 EDT 2013


On 04/13/2013 04:36 PM, Roy Smith wrote:
> In article <mailman.551.1365861813.3114.python-list at python.org>,
>   Chris Angelico <rosuav at gmail.com> wrote:
>
>> 2) The database engine must employ some form of write-ahead log.
>> [...]
>> one way or another, there must be a way to detect half-done
>> transactions.
>>
>> 3) The operating system and filesystem must support a forced file
>> synchronization (fsync/fdatasync), so the database engine can wait for
>> the data to be written to disk.
>>
>> 4) The underlying media (hard disk, SSD, USB stick, etc) must respond
>> to the fsync call by actually writing the content to persistent
>> storage before returning.
>
> Some of the early Unix file systems were very fragile.  One of the
> (often under-appreciated) major advances in BSD (it was certainly in
> 4.2, not sure how much earlier) was a new filesystem which was much more
> robust in the face of hardware failures and system crashes.  Prior to

Are you talking about (journaling?) filesystems such as ext3, ext4, JFS, 
ReiserFS and XFS ?

http://en.wikipedia.org/wiki/Journaling_file_system

> BSD, the on-disk data could be left in an inconsistent state if the
> system crashed at the wrong time.  In BSD, data was written to disk in
> such a way that every operation could either be backed out cleanly or
> had enough information to complete the transaction.

Journaling filesystems? I myself use ext4... There's a comparison here:

http://en.wikipedia.org/wiki/Comparison_of_file_systems

?




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