Gridfs Introduction
Gridfs is a MongoDB a built-in feature that can be used to store a large number of small files.
Http://www.mongodb.org/display/DOCS/GridFS
Http://www.mongodb.org/display/DOCS/GridFS+Specification
Gridfs Use
Mongodb provides a command-line toolMongofiles can handle it. Gridfs , in bin directory.
List all Files:
Mongofiles List
Upload a file:
Mongofiles put Xxx.txt
To download a file:
Mongofiles Get Xxx.txt
To find a file:
Mongofiles Search XXX// will find all file names that contain " XXX "The file
Mongofiles list XXX// all filenames are looked up to " XXX "file that is prefixed
Parameter description:
–d Specify the database, default is FS ,Mongofiles list–d Testgridfs
-u–p Specify user name, password
-H Specify host
-port Specify host Port
-C Specifies the collection name, which is the default FS
-T of the specified file MIME type, which is ignored by default
Use Mongovue to view, manage Gridfs
Mongovue Address:http://www.mongovue.com/
Mongovue is a free software, but more than the days after the function is limited. The restrictions can be lifted by removing the following registry key:
[hkey_current_user\software\classes\clsid\{b1159e65-821c3-21c5-ce21-34a484d54444}\4ff78130]
It's all right to delete the value under this item.
NGINX-GRIDFS Module installation and use
Project home: Https://github.com/mdirolf/nginx-gridfs
With Nginx-gridfs, you can directly use http to access Gridfs files in the.
1. Installation
Install various dependency packages: zlib ,Pcre , OpenSSL
In Ubuntu may be the following command:
sudo apt-get install Zlib1g-dev// seemssudo apt-get install Zlib-dev cannot be installed
sudo apt-get install libpcre3 Libpcre3-dev
sudo apt-get install OpenSSL Libssl-dev
Installation git (slightly)
Use git DownloadNginx-gridfs's Code:
git clone git://github.com/mdirolf/nginx-gridfs.git
CD Nginx-gridfs
Git submodule init
git submodule update
Download Nginx :
wget Http://nginx.org/download/nginx-1.0.12.zip
Tar zxvf nginx-1.0.12.zip
CD nginx-1.0.12
./configure--add-module= The path >
Make
sudo make install
If a compilation error occurs, the Configure when addedThe--with-cc-opt=-wno-error parameter.
2. Configuration Nginx
In Server in the configuration, add the following
location/pics/{
Gridfs Pics
Field=filename
type=string;
MONGO 127.0.0.1:27017;
}
The above configuration indicates:
Database is Pics , by file name filename to access the file, filename is of type string
Currently only supported through ID and the filename to access the file.
Start Nginx : /usr/local/nginx/sbin/nginx
Use Mongovue put a picture 001.jpg uploaded to Pics the database.
Open: Http://localhost/pics/001.jpg
If successful, you can see the picture displayed.
note Item
1. Gridfs do not automatically process MD5 the same file, for MD5 , if you want to gridfs , which you want the user to self-process. The calculation of the Md5 value is done by the client.
2. Because gridfs saves file data to fs.chunks When uploading a file, and then saves the file information to fs.files , so if you fail to upload the file, it is possible that the Garbage data appears in fs.chunks . This junk data can be cleaned up regularly.
Above describes the Gridfs detailed analysis of MongoDB, including the aspects of the content, I hope to be interested in PHP tutorial friends helpful.
