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25%
Asynchronous PostgreSQL
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © Fesus Robert, 123RF.com
_family=AF_INET, sin_port=htons(5432), ... sendto(4, "\0\0\0\20\4\322\26.\0\0.\0016\252\36\264", 16, 0, NULL, 0) = 16 recvfrom(4, "", 1, 0, NULL, NULL) = 0 close(4) = 0 poll([{fd=3
25%
Detecting phishing domains with dnstwist
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © tobkatrina, 123RF.com
in the Domain Name System and shows the IPv4 or IPv6 address to which they refer. Figure 1: A first call with just the domain of interest produces many
25%
Creating load for fun and profit
22.05.2023
Home »  Archive  »  2023  »  Issue 75: Teamwork  » 
Lead Image © Lucy Baldwin, 123RF.com
to maxing out a core with 100 percent load. For example, stress-ng -t 1m -c 0 -l 40 will burden all cores in the system (-c 0) with a 40 percent load (Figure 4). Loading all cores to 40 percent is something
25%
News for Admins
16.08.2018
Home »  Archive  »  2018  »  Issue 46: CMS S...  » 
 
://www.theverge.com/2018/2/23/17043768/intel-meltdown-spectre-no-us-goverment-warning), this time the chip maker responded by rewarding researchers $100,000 for the discovery. The company is reportedly working
25%
Secure Active Directory with the rapid modernization plan
05.08.2024
Home »  Archive  »  2024  »  Issue 82: Sover...  » 
Lead Image © Milos Kojadinovic, 123RF.com
and weighing up which risks your company is able to and wants to take on. In Entra, you can configure and monitor the risk level for your users and logins separately [6]. A higher risk level minimizes the number
25%
Attack and defense techniques
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Photo by Artem Bryzgalov on Unsplash
directly from the repository [6]. The ATT&CK navigator can be used to mark relevant entries during research and to display correlations, thus letting you plan and trace your progress in securing
25%
One metric to rule them all
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
/loadavg/ [3]: 1.00 0.97 0.94 1/1279 7743 The three additional numbers provided by Linux are the number of running processes (one in this case), the total number of processes, and the last process ID (PID
25%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
/share/doc/kernel-doc/Documentation/networking/bonding.txt ). Listing 5 ifcfg-bond0 01 DEVICE=bond0 02 IPADDR=192.168.10.200 03 NETMASK=255.255.255.0 04 ONBOOT=yes 05 USERCTL=no 06 BONDING_OPTS="mode=1 miimon=100" When the system is running, the /proc
25%
A Distributed SQL Database
03.08.2023
Home »  Archive  »  2023  »  Issue 76: Energ...  » 
Photo by Sonika Agarwal on Unsplash
, contiguous chunks called ranges, which are typically 64MB in size. These ranges are replicated across multiple nodes by the Raft consensus algorithm, ensuring strong consistency and fault tolerance. On top
25%
PostgreSQL Replication Update
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © Golkin Oleg, 123RF.com
. PostgreSQL 9.6 and 10.0 In many cases, a cluster will not be limited to two nodes; therefore, PostgreSQL lets you manage as many slaves as needed and set the number of synchronous slaves. For example

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