Three-phase commit protocol

In computer networking and databases, the three-phase commit protocol (3PC) is a distributed algorithm which lets all nodes in a distributed system agree to commit a transaction. Unlike the two-phase commit protocol (2PC) however, 3PC is non-blocking. Specifically, 3PC places an upper bound on the amount of time required before a transaction either commits or aborts. This property ensures that if a given transaction is attempting to commit via 3PC and holds some resource locks, it will release the locks after the timeout.

Protocol Description

In describing the protocol, we use terminology similar to that used in the two-phase commit protocol. Thus we have a single coordinator site leading the transaction and a set of one or more cohorts being directed by the coordinator.

Coordinator

Forza Horizon

Forza Horizon is a racing video game for Microsoft's Xbox 360 video game console. Developed principally by British games developer Playground Games in association with American developer Turn 10 Studios, the game is a part of Turn 10's long-running Forza Motorsport franchise, but is considered more of a spin-off instead of the next true member of the series. A sequel, Forza Horizon 2, was released on 30 September 2014.

Gameplay

Forza Horizon is an open-road game based around the fictitious Horizon Festival, a street racing event set in the state of Colorado. The game incorporates many different gameplay aspects from previous Forza Motorsport titles, like the large variety of cars, specifically around 300 cars, realistic physics and high definition graphics. The aim is to progress through the game by means of obtaining wristbands via winning races, while also increasing their popularity level by driving fast, destroying property, and performing other stunts and antics. Horizon features the physics of Forza Motorsport 4, which have been optimised to work on the 65 variants of terrain said to be present in the game. Players can drive off-road in select areas, while others are limited by guardrails or other means.

Mafia III

Mafia III is an upcoming open world third-person action-adventure video game developed by Hangar 13 and published by 2K Games, scheduled to be released for Microsoft Windows, Mac OS X, PlayStation 4, and Xbox One in 2016. It is the third installment in the Mafia series, and the debut title for Hangar 13.

Gameplay

Mafia III is an action-adventure video game played in a third-person perspective, in which players assume control of Lincoln Clay, a Vietnam War veteran on a quest to seek revenge for his friends, who are murdered by local mobs. The game is set in 1968 New Orleans, with the open world design allowing players to freely explore the game's world. Players can complete objectives using a variety of approaches. For example, players can use the weapons provided in the game, like shotguns and revolvers, to eliminate enemies. Alternatively, they can make use of stealth tactics throughout the entire mission without being noticed by enemies. The core gameplay revolves around gunplay. In addition, players can also perform executing moves and engage in melee-combat. The game also features a cover system, allowing players to take cover behind objects to avoid enemy gunfire. Players can also interrogate non-playable characters after defeating them in order to gain more information on his objectives. Players can attack and overrun locations owned by the Italian mob, and assign one of their lieutenants to operate the location. The available lieutenants are Cassandra, Burke, and Vito Scaletta; Vito was previously featured as the protagonist of Mafia II.