02-23-2011
HydraVM: Low-Cost, Transparent High Availability for Virtual Machines
HPL-2011-24
HydraVM: Low-Cost, Transparent High Availability for Virtual Machines - Hou, Kai-Yuan; Uysal, Mustafa; Merchant, Arif; Shin, Kang G.; Singhal, Sharad
Keyword(s): Virtualization, High Availability, VM Checkpointing, VM Restore, Shared Storage
Abstract: Existing approaches to providing high availability (HA) for virtualized environments require a backup VM for every primary running VM. These approaches are expensive in memory because the backup VM requires the same amount of memory as the primary, even though it is normally passive. In this paper, ...
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LEARN ABOUT DEBIAN
libravatar::url
Libravatar::URL(3pm) User Contributed Perl Documentation Libravatar::URL(3pm)
NAME
Libravatar::URL - Make URLs for Libravatars from an email address
SYNOPSIS
use Libravatar::URL;
my $url = libravatar_url( email => 'larry@example.org' );
DESCRIPTION
See <http://www.libravatar.org> for more information.
Functions
libravatar_url
# By email
my $url = libravatar_url( email => $email, %options );
# By OpenID
my $url = libravatar_url( openid => $openid, %options );
Constructs a URL to fetch the Libravatar for the given $email address or $openid URL.
%options are optional. "libravatar_url" will accept all the options of "gravatar_url" in Gravatar::URL except for "rating" and "border".
The available options are...
size
Specifies the desired width and height of the avatar (they are square).
Valid values are from 1 to 512 inclusive. Any size other than 80 may cause the original image to be downsampled using bicubic resampling
before output.
size => 40, # 40 x 40 image
default
The url to use if the user has no avatar.
default => "http://www.example.org/nobody.jpg"
Relative URLs will be relative to the base (ie. libravatar.org), not your web site.
Libravatar defines special values that you may use as a default to produce dynamic default images. These are "identicon", "monsterid",
"wavatar" and "retro". "404" will cause the URL to return an HTTP 404 "Not Found" error instead and "mm" will display the same "mystery
man" image for everybody. See <http://www.libravatar.org/api> for more info.
If omitted, Libravatar will serve up their default image, the orange butterfly.
base
This is the URL of the location of the Libravatar server you wish to grab avatars from. Defaults to <http://cdn.libravatar.org/avatar/>
for HTTP and <https://seccdn.libravatar.org/avatar/> for HTTPS.
short_keys
If true, use short key names when constructing the URL. "s" instead of "size", "d" instead of "default" and so on.
short_keys defaults to true.
https
If true, serve avatars over HTTPS instead of HTTP.
You should select this option if your site is served over HTTPS to avoid browser warnings about the presence of insecure content.
https defaults to false.
LICENSE
Copyright 2011, Francois Marier <fmarier@gmail.com>.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
See http://dev.perl.org/licenses/artistic.html
SEE ALSO
<http://www.libravatar.org> - The Libravatar web site
<http://www.libravatar.org/api> - The Libravatar API documentation
perl v5.14.2 2012-04-04 Libravatar::URL(3pm)