From 780b92ada9afcf1d58085a83a0b9e6bc982203d1 Mon Sep 17 00:00:00 2001 From: Lorry Tar Creator Date: Tue, 17 Feb 2015 17:25:57 +0000 Subject: Imported from /home/lorry/working-area/delta_berkeleydb/db-6.1.23.tar.gz. --- docs/programmer_reference/program_cache.html | 41 ++++++++++++++++------------ 1 file changed, 23 insertions(+), 18 deletions(-) (limited to 'docs/programmer_reference/program_cache.html') diff --git a/docs/programmer_reference/program_cache.html b/docs/programmer_reference/program_cache.html index 5bfbaf9e..a278318d 100644 --- a/docs/programmer_reference/program_cache.html +++ b/docs/programmer_reference/program_cache.html @@ -14,7 +14,7 @@
-

Library Version 11.2.5.3

+

Library Version 12.1.6.1

@@ -22,9 +22,7 @@ - +
Prev Chapter 15.  - Programmer Notes - Chapter 15.  Programmer Notes  Next
@@ -38,19 +36,25 @@
-

Many disk drives contain onboard caches. Some of these drives include -battery-backup or other functionality that guarantees that all cached -data will be completely written if the power fails. These drives can -offer substantial performance improvements over drives without caching -support. However, some caching drives rely on capacitors or other -mechanisms that guarantee only that the write of the current sector -will complete. These drives can endanger your database and potentially -cause corruption of your data.

-

To avoid losing your data, make sure the caching on your disk drives is -properly configured so the drive will never report that data has been written -unless the data is guaranteed to be written in the face of a power failure. -Many times, this means that write-caching on the disk drive must -be disabled.

+

+ Many disk drives contain onboard caches. Some of these + drives include battery-backup or other functionality that + guarantees that all cached data will be completely written if + the power fails. These drives can offer substantial + performance improvements over drives without caching support. + However, some caching drives rely on capacitors or other + mechanisms that guarantee only that the write of the current + sector will complete. These drives can endanger your database + and potentially cause corruption of your data. +

+

+ To avoid losing your data, make sure the caching on your + disk drives is properly configured so the drive will never + report that data has been written unless the data is + guaranteed to be written in the face of a power failure. Many + times, this means that write-caching on the disk drive must be + disabled. +

@@ -63,7 +67,8 @@ be disabled.

 Next - Memory-only or Flash configurations  + Memory-only or Flash + configurations  Home -- cgit v1.2.1