Apache CouchDB 1.3.1 发布，Apache CouchDB 是一个面向文档的数据库管理系统。它提供以 JSON 作为数据格式的 REST 接口来对其进行操作，并可以通过视图来操纵文档的组织和呈现。 CouchDB 是 Apache 基金会的顶级开源项目。
CouchDB落实到最底层的数据结构就是两类B+Tree 。
2013-09-03发布1.4.0 上个版本是2013-06-25的1.3.1
完全改进：
Upgrade Notes
We now support Erlang/OTP R16B and R16B01; the minimum required version is R14B.
User document role values must now be strings. Other types of values will be refused when saving the user document.
Changes
COUCHDB-1684: Support for server-wide changes feed reporting on creation, updates and deletion of databases. #917d8988
COUCHDB-1139: it’s possible to apply list functions to_all_docsview. #54fd258e
Automatic loading of CouchDB plugins. #3fab6bb5
COUCHDB-1634: Reduce PBKDF2 work factor. #f726bc4d
Allow storing pre-hashed admin passwords via_configAPI. #c98ba561
COUCHDB-1772: Prevent invalid JSON output when usingall_or_nothing_bulk_docsAPI. #dfd39d57
Add a configurable whitelist of user document properties. #8d7ab8b1
COUCHDB-1852: Support Last-Event-ID header in EventSource changes feeds. #dfd2199a
Much improved documentation, including an expanded description ofvalidate_doc_updatefunctions (commit:ef9ac469) and a description of how CouchDB handles JSON number values (#bbd93f77).
COUCHDB-1632: Ignore epilogues in multipart/related MIME attachments. #2b4ab67a
Split up replicator_db tests into multiple independent tests.
下载：http://apache.org/dist/couchdb/source/1.4.0/apache-couchdb-1.4.0.tar.gz
来自:开源中国社区
