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08/10: gnu: lmdb: Expand description.


From: Tobias Geerinckx-Rice
Subject: 08/10: gnu: lmdb: Expand description.
Date: Wed, 21 Jun 2017 16:03:02 -0400 (EDT)

nckx pushed a commit to branch master
in repository guix.

commit fda852ff40e978b77dd7c4e4fe44e5fe23eedd61
Author: Tobias Geerinckx-Rice <address@hidden>
Date:   Wed Jun 14 18:00:07 2017 +0200

    gnu: lmdb: Expand description.
    
    * gnu/packages/databases.scm (lmdb)[synopsis]: Capitalise.
    [description]: Elaborate.
---
 gnu/packages/databases.scm | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/databases.scm b/gnu/packages/databases.scm
index 9691f1a..4aa8949 100644
--- a/gnu/packages/databases.scm
+++ b/gnu/packages/databases.scm
@@ -16,6 +16,7 @@
 ;;; Copyright © 2017 Marius Bakke <address@hidden>
 ;;; Copyright © 2017 Thomas Danckaert <address@hidden>
 ;;; Copyright © 2017 Arun Isaac <address@hidden>
+;;; Copyright © 2017 Tobias Geerinckx-Rice <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1356,8 +1357,17 @@ trees (LSM), for sustained throughput under random 
insert workloads.")
                (("/usr/local") (assoc-ref outputs "out")))
             #t)))))
     (home-page "https://symas.com/products/lightning-memory-mapped-database";)
-    (synopsis "Lightning memory-mapped database library")
-    (description "Lightning memory-mapped database library.")
+    (synopsis "Lightning Memory-Mapped Database library")
+    (description
+     "The @dfn{Lightning Memory-Mapped Database} (LMDB) is a high-performance
+transactional database.  Unlike more complex relational databases, LMDB handles
+only key-value pairs (stored as arbitrary byte arrays) and relies on the
+underlying operating system for caching and locking, keeping the code small and
+simple.
+The use of ‘zero-copy’ memory-mapped files combines the persistence of classic
+disk-based databases with high read performance that scales linearly over
+multiple cores.  The size of each database is limited only by the size of the
+virtual address space — not physical RAM.")
     (license license:openldap2.8)))
 
 (define-public libpqxx



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