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System Architecture 2-151
Structure of a Blobspace Blobpage
Figure 2-39 illustrates the different locations of the two pairs of timestamps
that appear on the blobspace blobpage.
Figure 2-39
Blob
timestamps
register the most-
recent point in time
when this blobpage
was allocated.
Page-header and
page-ending
timestamps
validate page
consistency and
confirm that the
page write was
successful.
Blob timestamp pair
Free space
Blob data segment
Free space
Header
Header
Page-header and page-ending timestamps
Before the blob is overwritten
After the blob is overwritten
003
003
004
Blob data segment
Blob descriptor
74
74
004
96
96
Blob descriptor