What does "Ceph Cluster" actually mean? You will find this and many other terms simply explained here.
A host is a service computer that is part of a computer network. It runs permanently and provides services such as sending e-mails for other systems.
Hosting Hosting refers in English to the activity and role of an "organizer" or "host", but in the German-speaking world it is an established short form for the operation of software application or Internet services (eng. "Internet hosting").
A hosting provider offers and operates…
InnoDB is a free storage subsystem for the MySQL database management system. Its main advantage over other storage subsystems for MySQL is that transaction security and referential integrity are ensured via foreign keys.
Innobase Oy, the manufacturer of InnoDB, was acquired by Oracle…
Input/Output operations Per Second, in short IOPS, is a computer benchmark specification of data carriers. It indicates how many input and output commands can be executed per second. Thereby the specification can be specified more precisely:
- Total IOPS
Average number of…
IPv4 (Internet Protocol Version 4), before the development of IPv6 also simply IP, is the fourth version of the Internet Protocol (IP). It was the first version of the Internet Protocol to be distributed and used worldwide, and is an important technical foundation of the Internet. It was defined…
The Internet Protocol Version 6 (IPv6), formerly also called Internet Protocol next Generation (IPng), is a procedure standardized by the Internet Engineering Task Force (IETF) since 1998 for the transmission of data in packet-switched computer networks, especially the Internet. In these…
Kernel is the central module of an operating system. It serves as an interface between the graphical user interface and the physical components of the hardware system.
In computer science, load balancing is used to distribute extensive calculations or large numbers of requests among several systems working in parallel. This can have very different characteristics. Simple load balancing, for example, takes place on computers with multiple processors. Each…
LXC (Linux Containers) is an operating system-level virtualization method that enables multiple Linux systems running in isolation from each other on a single host.
Unlike other systems, LXC does not realize its virtualization by means of virtual machines. Instead, LXC creates a virtual…
Memcached is a cache server released under the BSD license for the general deposit and retrieval of data from memory. The software is mainly used for websites that temporarily store data from database systems on the server. It is used to improve performance for many dynamic websites with…
NGINX, Inc, now part of F5, is the company behind the popular open source project. It offers a range of technologies for developing and deploying modern applications. The joint NGINX and F5 solution bridges the gap between NetOps and DevOps, through multi-cloud application services that extend…
NVM Express (NVMe for short) is an interface first published in 2011 to connect SSDs, i.e. nonvolatile memory (NVM for short), via PCI Express without the need for manufacturer-specific drivers. It is supposed to increase the speed especially with parallel accesses, as they often occur with…
OpenStack is a joint project founded by NASA and Rackspace, which develops an open source platform for building public and private clouds. In addition to HP, IBM, Mirantis, Cisco, Dell, Intel, VMware and many others are also working on this project. Examples of successfully implemented OpenStack…
PHP (recursive acronym and backronym for "PHP: Hypertext Preprocessor", originally "Personal Home Page Tools") is a scripting language with a syntax similar to C and Perl, mainly used to create dynamic web pages or web applications. PHP is distributed as free software under the PHP license. PHP…
The PHP OPcache is a PHP accelerator that caches and optimizes the bytecode for later script calls.
A RAM (Random Access Memory) is used by the CPU as working memory or main memory and is only a volatile memory. This means that data only remains in a RAM until it is overwritten by new data or until the RAM is supplied by a supply voltage. The access times of RAMs are in the nanosecond range.…
Redis is an in-memory database with a simple key-value data structure and belongs to the family of NoSQL databases (i.e. it is not relational). According to a survey by DB-Engines.com, Redis is the most common key-value store.
The simple structure of the database is less suitable for…
Patches are small updates that fix known security vulnerabilities.
A server is a powerful network computer that provides resources for other computers or programs. However, there are also software servers that communicate with a client and provide access to the data provided.
A single point of failure (SPOF) is a component of a technical system whose failure results in the failure of the entire system.
In the case of highly available systems, care must be taken to ensure that all components of a system are designed with redundancy. Diversity should also play…