000			nam a22 4500
999			_c32629 _d32629
008			231128b xxu||||| |||| 00| 0 eng d
020			_a9783031007293
082			_a005.86 _bGRA
100			_aGraefe, Goetz
245			_aInstant recovery with write-ahead logging : page repair, system restart, and media restore
260			_bSpringer, _c2022 _aCham :
300			_axvii, 113 p. ; _bill., _c23 cm
365			_b34.99 _cEUR _d91.70
490			_aSynthesis lectures on data management ; _v39
504			_aIncludes bibliographical references
520			_aTraditional theory and practice of write-ahead logging and of database recovery techniques revolve around three failure classes: transaction failures resolved by rollback; system failures (typically software faults) resolved by restart with log analysis, "redo," and "undo" phases; and media failures (typically hardware faults) resolved by restore operations that combine multiple types of backups and log replay. The recent addition of single-page failures and single-page recovery has opened new opportunities far beyond its original aim of immediate, lossless repair of single-page wear-out in novel or traditional storage hardware. In the contexts of system and media failures, efficient single-page recovery enables on-demand incremental "redo" and "undo" as part of system restart or media restore operations. This can give the illusion of practically instantaneous restart and restore: instant restart permits processing new queries and updates seconds after system reboot and instant restore permits resuming queries and updates on empty replacement media as if those were already fully recovered. In addition to these instant recovery techniques, the discussion introduces much faster offline restore operations without slowdown in backup operations and with hardly any slowdown in log archiving operations. The new restore techniques also render differential and incremental backups obsolete, complete backup commands on the database server practically instantly, and even permit taking full backups without imposing any load on the database server.
650			_aComputer Communication Networks
650			_aComputer networks
650			_aData Structures and Information Theory
700			_aGuy, Wey
700			_aSauer, Caetano
942			_2ddc _cBK