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PHP slow response when using external hostnames


PHP slow response when using external hostnames

By : user2950339
Date : November 17 2020, 11:52 AM
wish help you to fix your issue It appears that when using the hostname, the IPv6 AAAA record is getting resolved first and PHPMailer is trying to connect to that. Once that fails, it connects to the IPv4 address.
code :


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Node.js - pipe() to a http response results in slow response time on ubuntu

Node.js - pipe() to a http response results in slow response time on ubuntu


By : osas
Date : March 29 2020, 07:55 AM
I hope this helps . You probably need to do something like socket.setNoDelay([noDelay]). Not sure how to do that with the http module though. My guess is one end is waiting for socket close since its a small message, and when it times out, you see the response.
The setNoDelay() must be called on the client request, and first time I tried it was on my proxied request.
code :
server.on('connection', function (socket) { 
    'use strict'; 
    console.log('server.on.connection - setNoDelay'); 
    socket.setNoDelay(true); 
});
Remove common elements of hostnames (shorten hostnames) - DRY

Remove common elements of hostnames (shorten hostnames) - DRY


By : L. Fencl
Date : March 29 2020, 07:55 AM
will be helpful for those in need At the very least, split out the values and keys into separate lists, then process just the values before reconstituting your dictionary, and use a short loop to pick an index for start and end trimming:
code :
def shorten_hostnames(machines):
    keys, values = zip(*machines.items())
    values = [v.split('.') for v in values]
    for i, s in ((-1, slice(-1)), (0, slice(1, None))):
        while all(values):
            if not len(set(v[i] for v in values)) == 1:
                break
            if any(len(v) <= 1 for v in values):
                break
            values = [v[s] for v in values]
    return {k: '.'.join(v) for k, v in zip(keys, values)}
from itertools import dropwhile, izip_longest

def remove_common_prefix(*parts):
    # always leaves a last common element in place
    zipped = izip_longest(*(p[:-1] for p in parts), fillvalue=None)
    stripped = dropwhile(lambda v: len(set(v)) == 1, zipped)
    res = [filter(None, part) + (old[-1],) for part, old in zip(zip(*stripped), parts)]
    # filtered everything away? Then return just the last parts
    return res or [p[-1:] for p in parts]

def shorten_hostnames(machines):
    # edge-case; faster to just return the first part
    if len(machines) == 1:
        return {k: v.split('.', 1)[0] for k, v in machines.items()}
    keys, values = zip(*machines.items())  # for easier processing and re-assembling
    parts = remove_common_prefix(*(v.split('.')[::-1] for v in values))
    parts = remove_common_prefix(*(part[::-1] for part in parts))
    return {k: '.'.join(v) for k, v in zip(keys, parts)}
>>> shorten_hostnames(machines)
{'b.ace.site.info': 'b.ace', 'a.ace.site.info': 'a.ace', 'b.bob.site.info': 'b.bob', 'a.bob.site.info': 'a.bob'}
>>> shorten_hostnames({'foo': 'a.ace.site', 'bar': 'a.ace.site.info'})
{'foo': 'site', 'bar': 'site.info'}
>>> shorten_hostnames({'ace.a.site.info': 'ace.a.site.info', 'ace.b.site.info': 'ace.b.site.info'})
{'ace.b.site.info': 'b', 'ace.a.site.info': 'a'}
>>> shorten_hostnames({'ace.a.site.info': 'ace.a.site.info'})
{'ace.a.site.info': 'ace'}
Given an array of hostnames, how can I generate a set of files based on those hostnames in puppet

Given an array of hostnames, how can I generate a set of files based on those hostnames in puppet


By : user3537472
Date : March 29 2020, 07:55 AM
hope this fix your issue I am not sure there is a way to even do this in puppet, but here is what I am trying to do. , I have found a solution ...
code :
class make_files (
                $rabbit_servers = ['rabbit-1:10.29.103.33','rabbit-2:10.29.103.34'],
                $mongo_servers = ['ost-mongo-el7-001:10.29.103.31'],
) {
    define my_file ($content, $hostgroup) {
                $tuple = split($name, ':')
                $host_name             = $tuple[0]
                $file_name               = "/tmp/$host_name.cfg"
                $ipaddress               = $tuple[1]
                $config    = "define host {
         use                     linux-server
         host_name               $host_name
         alias                   $host_name
         hostgroups              $hostgroup 
         address                 $ipaddress
}"

        file { $file_name:
          ensure  => file,
          content => $config,
        }
    }
    $rabbit_content = join($rabbit_servers, ',')
    my_file { $rabbit_servers: content => $rabbit_content, hostgroup => 'rabbit_hosts' }
    $mongo_content = join($mongo_servers, ',')
    my_file { $mongo_servers: content => $mongo_content, hostgroup => 'mongo_hosts' }
}
Extreme slow server response due to 400,000 coupons generated with woocommerce coupon generator plugin and slow MySQL Se

Extreme slow server response due to 400,000 coupons generated with woocommerce coupon generator plugin and slow MySQL Se


By : C.Hong
Date : March 29 2020, 07:55 AM
it fixes the issue to delete coupon using built in function you can use wp_delete_post( $id ); as WooCommerce Store the coupon as custom post type.
so the following function will run and delete 100 coupon at time everytime the admin area is initialized and you can increase the limit if you want
code :
add_action( 'admin_init', 'count_coupon' );

function count_coupon() {
    global $wpdb;

    if ( ! is_user_logged_in() ) {
        return;
    }

    if ( ! current_user_can( 'manage_options' ) ) {
        return;
    }
    global $wpdb;
    $copuns = $wpdb->get_results( "SELECT ID FROM {$wpdb->prefix}posts WHERE post_type = 'shop_coupon' LIMIT 100" );
    foreach ( $copuns as $copun ) {

        wp_delete_post( $copun->ID );

    }
}
My google cloud instance is no longer able to resolve external hostnames

My google cloud instance is no longer able to resolve external hostnames


By : Abiib Amir
Date : March 29 2020, 07:55 AM
wish of those help Turns out that the file /etc/resolv.conf has been automagically populated roughly 18 hours after spinning up the instance.
Not super convenient, but glad it is resolved.
code :
domain c.[Project ID].internal 
search c.[Project ID].internal.google.internal. 
nameserver 169.254.169.254
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