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Riak
Riak (pronounced "ree-ack" ) is a distributed NoSQL key-value data store that offers high availability, fault tolerance, operational simplicity, and scalability. Riak moved to an entirely open-source project in August 2017, with many of the licensed Enterprise Edition features being incorporated. Riak implements the principles from Amazon's Dynamo paper with heavy influence from the CAP theorem. Written in Erlang, Riak has fault-tolerant data replication and automatic data distribution across the cluster for performance and resilience. Riak has a pluggable backend for its core storage, with the default storage backend being Bitcask. LevelDB is also supported, with other options (such as the pure-Erlang Leveled) available depending on the version. Riak was originally developed by engineers employed by Basho Technologies and maintained by them until 2017 when the rights were sold to bet365 after Basho went into receivership. Main features ;Fault-tolerant availabili ...
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Riak Distributed NoSQL Key-value Data Store Logo
Riak (pronounced "ree-ack" ) is a distributed NoSQL key-value data store that offers high availability, fault tolerance, operational simplicity, and scalability. Riak moved to an entirely open-source project in August 2017, with many of the licensed Enterprise Edition features being incorporated. Riak implements the principles from Amazon's Dynamo paper with heavy influence from the CAP theorem. Written in Erlang, Riak has fault-tolerant data replication and automatic data distribution across the cluster for performance and resilience. Riak has a pluggable backend for its core storage, with the default storage backend being Bitcask. LevelDB is also supported, with other options (such as the pure-Erlang Leveled) available depending on the version. Riak was originally developed by engineers employed by Basho Technologies and maintained by them until 2017 when the rights were sold to bet365 after Basho went into receivership. Main features ;Fault-tolerant availability: Riak r ...
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Basho Technologies
Basho Technologies was a distributed systems' company that developed a key-value NoSQL database technology, Riak, and an object storage system built upon the Riak platform, called Riak CS. Technology and products Basho was the developer of Riak, an Open-source license, open source distributed database that offers high availability, fault tolerance, operation simplicity and scalability. Riak Enterprise was a commercial version of the database offered by Basho, the project's sponsor, with advanced multi-data center replication and enterprise support. Riak is a key value store system that can collect unstructured data and store it as objects in buckets that can then be queried. It's also highly scalable, able to distribute itself over a server cluster and add new servers as needed, while maintaining its own high availability. Riak is written in Erlang (programming language), Erlang, a language that gives a system built-in support for distribution across a server cluster, fault tole ...
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NoSQL
NoSQL (originally meaning "Not only SQL" or "non-relational") refers to a type of database design that stores and retrieves data differently from the traditional table-based structure of relational databases. Unlike relational databases, which organize data into rows and columns like a spreadsheet, NoSQL databases use a single data structure—such as key–value pairs, wide columns, graphs, or documents—to hold information. Since this non-relational design does not require a fixed schema, it scales easily to manage large, often unstructured datasets. NoSQL systems are sometimes called ''"Not only SQL"'' because they can support SQL-like query languages or work alongside SQL databases in polyglot-persistent setups, where multiple database types are combined. Non-relational databases date back to the late 1960s, but the term "NoSQL" emerged in the early 2000s, spurred by the needs of Web 2.0 companies like social media platforms. NoSQL databases are popular in big data ...
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LevelDB
LevelDB is an open-source on-disk key-value store written by Google fellows Jeffrey Dean and Sanjay Ghemawat. Inspired by Bigtable, LevelDB source code is hosted on GitHub under the New BSD License and has been ported to a variety of Unix-based systems, macOS, Windows, and Android. Features LevelDB stores keys and values in arbitrary byte arrays, and data is sorted by key. It supports batching writes, forward and backward iteration, and compression of the data via Google's Snappy compression library. LevelDB is not an SQL database. Like other NoSQL and dbm stores, it does not have a relational data model and it does not support SQL queries. Also, it has no support for indexes. Applications use LevelDB as a library, as it does not provide a server or command-line interface. MariaDB 10.0 comes with a storage engine which allows users to query LevelDB tables from MariaDB. History LevelDB is based on concepts from Google's Bigtable database system. The table implementation f ...
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Bitcask
Bitcask is an Erlang (programming language), Erlang application that provides an API for storing and retrieving key/value data into a log-structured hash table. The design owes a lot to the principles found in log-structured file systems and draws inspiration from a number of designs that involve log file merging. Strengths Bitcask has a number of advantages owing to its write-once, append-only on-disk data-format and its use of an in-memory hash-table of keys for lookups: * Low latency for read and write operations. * High throughput, especially when writing an incoming stream of random items: Because the data being written doesn't need to be ordered on disk and because the log-structured design allows for minimal disk-head movement during writes, these operations generally saturate the I/O and disk bandwidth. * Single seek to retrieve any value: Bitcask's in-memory hash-table of keys points directly to the locations on disk where the data resides. Bitcask never needs more than ...
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Dynamo (storage System)
Dynamo is a set of techniques that together can form a highly available key-value structured storage system or a distributed data store. It has properties of both databases and distributed hash tables (DHTs). It was created to help address some scalability issues that Amazon experienced during the holiday season of 2004. By 2007, it was used in Amazon Web Services, such as its Simple Storage Service (S3). Relationship to DynamoDB Amazon DynamoDB is "built on the principles of Dynamo" and is a hosted service within the AWS infrastructure. However, while Dynamo is based on leaderless replication, DynamoDB uses single-leader replication. Principles * Incremental scalability: Dynamo should be able to scale out one storage host (or “node”) at a time, with minimal impact on both operators of the system and the system itself. * Symmetry: Every node in Dynamo should have the same set of responsibilities as its peers; there should be no distinguished node or nodes that tak ...
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Protocol Buffers
Protocol Buffers (Protobuf) is a free and open-source cross-platform data format used to serialize structured data. It is useful in developing programs that communicate with each other over a network or for storing data. The method involves an interface description language that describes the structure of some data and a program that generates source code from that description for generating or parsing a stream of bytes that represents the structured data. Overview Google developed Protocol Buffers for internal use and provided a code generator for multiple languages under an open-source license. The design goals for Protocol Buffers emphasized simplicity and performance. In particular, it was designed to be smaller and faster than XML. Protocol Buffers is widely used at Google for storing and interchanging all kinds of structured information. The method serves as a basis for a custom remote procedure call (RPC) system that is used for nearly all inter-machine communication ...
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Application Programming Interface
An application programming interface (API) is a connection between computers or between computer programs. It is a type of software Interface (computing), interface, offering a service to other pieces of software. A document or standard that describes how to build such a connection or interface is called an ''API specification''. A computer system that meets this standard is said to ''implement'' or ''expose'' an API. The term API may refer either to the specification or to the implementation. In contrast to a user interface, which connects a computer to a person, an application programming interface connects computers or pieces of software to each other. It is not intended to be used directly by a person (the end user) other than a computer programmer who is incorporating it into software. An API is often made up of different parts which act as tools or services that are available to the programmer. A program or a programmer that uses one of these parts is said to ''call'' that ...
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Representational State Transfer
REST (Representational State Transfer) is a software architectural style that was created to describe the design and guide the development of the architecture for the World Wide Web. REST defines a set of constraints for how the architecture of a distributed, Internet-scale hypermedia system, such as the Web, should behave. The REST architectural style emphasises uniform API, interfaces, independent deployment of Software component, components, the scalability of interactions between them, and creating a Multitier architecture, layered architecture to promote caching to reduce user-perceived latency (engineering), latency, enforce computer security, security, and encapsulate legacy systems. REST has been employed throughout the software industry to create stateless protocol, stateless, reliable, web application, web-based applications. An application that adheres to the #Architectural constraints, REST architectural constraints may be informally described as ''RESTful'', althoug ...
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Network Partition
A network partition is a division of a computer network into relatively independent subnets, either by design, to optimize them separately, or due to the failure of network devices. Distributed software must be designed to be partition-tolerant, that is, even after the network is partitioned, it still works correctly. For example, in a network with multiple subnets where nodes A and B are located in one subnet and nodes C and D are in another, a partition occurs if the network switch device between the two subnets fails. In that case nodes A and B can no longer communicate with nodes C and D, but all nodes A-D work the same as before. As a CAP trade-off The CAP theorem is based on three trade-offs: consistency, availability, and partition tolerance. Partition tolerance, in this context, means the ability of a data processing system to continue processing data even if a network partition causes communication errors between subsystems. External links Partition of the Large ...
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Bet365
Bet365 is a British gambling company founded in 2000. Its product offering includes sports betting, online casino, online poker, and online bingo. Business operations are conducted from its headquarters in Stoke-on-Trent, alongside a satellite offices in Manchester and Malta. It was founded by Denise Coates, who remains the majority shareholder and joint-chief executive, alongside her brother John Coates. Overview Bet365 is an online gambling company offering sports betting and casino type games. In addition to the company headquarters in Stoke-on-Trent, Bet365 have further offices in Manchester, Gibraltar, Malta, Bulgaria, Armenia and Australia. The group employed over 4,000 people as of 2020. Bet365 is a trading name of Hillside (New Media) Limited. and operations. History Bet365 was founded in 2000 in a portable building in Stoke-On-Trent by Denise Coates. Denise developed a sports betting platform and trading team to launch the business online in March 2001. The busin ...
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Leveled (key-value Datastore)
Level or levels may refer to: Engineering *Level (optical instrument), a device used to measure true horizontal or relative heights *Spirit level or bubble level, an instrument designed to indicate whether a surface is horizontal or vertical *Canal pound or level *Regrading or levelling, the process of raising and/or lowering the levels of land *Storey or level, a vertical unit of a building or a mine *Level (coordinate), vertical position *Horizontal plane parallel Gaming *Level (video games), a stage of the game *Level (role-playing games), a measurement of character development Music *Level (music), similar to but more general and basic than a chord * "Level" (The Raconteurs song) * ''Levels'' (album), an album by AKA * "Levels" (Avicii song) * "Levels" (Bilal song) * "Levels" (Nick Jonas song) * "Levels" (Meek Mill song) * "Levels" (NorthSideBenji song), featuring Houdini * "Levels" (Sidhu Moose Wala song) Places * Level Mountain, a volcano in northern British Columbia, Can ...
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