d587b3a37a
The new release includes performance improvements and advanced SQL
features which will support bigger data warehouses, higher-volume
transaction processing, and more complex distributed enterprise
software.
Major new features in this release include:
Roles:
PostgreSQL now supports database roles, which simplify the
management of large numbers of users with complex
overlapping database rights.
IN/OUT Parameters:
PostgreSQL functions now support IN, OUT and INOUT
parameters, which substantially improves support of complex
business logic for J2EE and .NET applications.
Two-Phase Commit (2PC):
Long in demand for WAN applications and heterogeneous data
centers using PostgreSQL, this feature allows
ACID-compliant transactions across widely separated
servers.
Some Performance Enhancements found in this release include:
Improved Multiprocessor (SMP) Performance:
The buffer manager for 8.1 has been enhanced to scale almost
linearly with the number of processors, leading to significant
performance gains on 8-way, 16-way, dual-core, and multi-core
CPU servers.
Bitmap Scan:
Indexes will be dynamically converted to bitmaps in memory when
appropriate, giving up to twenty times faster index performance
on complex queries against very large tables.
Table Partitioning:
The query planner is now able to avoid scanning whole sections
of a large table using a technique known as Constraint
Exclusion.
Shared Row Locking:
PostgreSQL's "better than row-level locking" now supports even
higher levels of concurrency through the addition of shared
row locks for foreign keys.
For a more complete listing of changes in this release, please see the
Release Notes visible at:
http://www.postgresql.org/docs/current/static/release.html#RELEASE-8-1
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MD5 (postgresql/postgresql-base-8.1.0.tar.bz2) = 61ada6238aebbe6f3850895af25df37b
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SHA256 (postgresql/postgresql-base-8.1.0.tar.bz2) = 604b6be364d88a2d0b0a4bae2165be0072bb8e79129c874f9a7fa1734dc8cb38
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SIZE (postgresql/postgresql-base-8.1.0.tar.bz2) = 8027880
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MD5 (postgresql/postgresql-docs-8.1.0.tar.bz2) = 544a41caa516cd9c6a07fa5d604a91bd
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SHA256 (postgresql/postgresql-docs-8.1.0.tar.bz2) = 9ef412d3859646ec6d3478cd828c395e56610cc7a54daa18381da53153847d7b
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SIZE (postgresql/postgresql-docs-8.1.0.tar.bz2) = 2443376
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MD5 (postgresql/postgresql-opt-8.1.0.tar.bz2) = 5fd9e43abc22e6af1ca819e43eb1fbd2
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SHA256 (postgresql/postgresql-opt-8.1.0.tar.bz2) = a9dbb375428f2250e7fcb5e66be2eaf3b87644f33f36b195b0d87ad91432bb40
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SIZE (postgresql/postgresql-opt-8.1.0.tar.bz2) = 141420
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MD5 (postgresql/postgresql-test-8.1.0.tar.bz2) = 594b045aa80aef1907bbd6b922a1e02b
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SHA256 (postgresql/postgresql-test-8.1.0.tar.bz2) = 1fd3b5fb35d39b0fe703124b982cf4b10d6495f99eb3519cb2c59134a8bfcb2f
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SIZE (postgresql/postgresql-test-8.1.0.tar.bz2) = 968672
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MD5 (postgresql/pg-810-icu-34-2005-11-09.diff.gz) = b1f6f40f6fcc887f35d57bb7aee2ed09
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SHA256 (postgresql/pg-810-icu-34-2005-11-09.diff.gz) = 714d030be73d3df1fd5f47409e0b059ef1d04ad9cb56255b5d803f25b8c93f1a
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SIZE (postgresql/pg-810-icu-34-2005-11-09.diff.gz) = 3956
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