| Name : perl-MLDBM-Sync
| |
| Version : 0.30
| Vendor : obs://build_opensuse_org/devel:languages:perl
|
| Release : lp154.1.1
| Date : 2023-01-27 16:54:37
|
| Group : Development/Libraries/Perl
| Source RPM : perl-MLDBM-Sync-0.30-lp154.1.1.src.rpm
|
| Size : 0.07 MB
| |
| Packager : https://www_suse_com/
| |
| Summary : Safe concurrent access to MLDBM databases
|
Description :
This module wraps around the MLDBM interface, by handling concurrent access
to MLDBM databases with file locking, and flushes i/o explicity per
lock/unlock. The new [Read]Lock()/UnLock() API can be used to serialize
requests logically and improve performance for bundled reads & writes.
my $sync_dbm_obj = tie %cache, \'MLDBM::Sync\', \'/tmp/syncdbm\', O_CREAT|O_RDWR, 0640;
$sync_dbm_obj->Lock;
... all accesses to DBM LOCK_EX protected, and go to same tied file handles
$cache{\'KEY\'} = \'VALUE\';
$sync_dbm_obj->UnLock;
$sync_dbm_obj->ReadLock;
... all read accesses to DBM LOCK_SH protected, and go to same tied files
... WARNING, cannot write to DBM in ReadLock() section, will die()
... WARNING, my $v = $cache{\'KEY\'}{\'SUBKEY\'} will trigger a write so not safe
... to use in ReadLock() section
my $value = $cache{\'KEY\'};
$sync_dbm_obj->UnLock;
$cache{\'KEY\'} = \'VALUE\';
my $value = $cache{\'KEY\'};
MLDBM continues to serve as the underlying OO layer that serializes complex
data structures to be stored in the databases. See the MLDBM BUGS section
for important limitations.
MLDBM::Sync also provides built in RAM caching with Tie::Cache md5 key
checksum functionality.
|
RPM found in directory: /packages/linux-pbone/ftp5.gwdg.de/pub/opensuse/repositories/devel:/languages:/perl:/CPAN-M/15.4/noarch |
