Amadeus S.a.s.

Rémy Gole

Rudy Daniello

Luc Isnardy

Guillaume Legrand

Damien Ciabrini

Charles-Antoine Robelin

Brigitte Elisabeth Ruscica

Marc Patoureaux

Benoit Janin

Nicolas Maillot

Alexandre Chabod

Wayne Rubenstein

Lénaïc Huard

Jean-Philippe Aubry

Claudine Reynaud

Luc Viguie

Sébastien Gibergues

A method and a system for maintaining coherence of cache contents in a multi-tiered architecture of servers are described. This includes a front tier of satellite servers, each operating a local cache, and a middle tier of central servers each operating a central cache. Central servers interface with databases through database servers to retrieve the data elements used to construct objects and store them in central caches. Once constructed, objects are attributed a time-to-live (TTL) and stored in central caches then, forwarded to the satellite servers where they are stored in local caches before being delivered to the software applications that have requested them. They are invalidated when outdated and reconstructed from a central server from where they are forwarded to all central caches and to the local caches where they are needed.

System and method to maintain coherence of cache contents in a multi-tier system aimed at interfacing large databases

A system for identifying a parameter in a version of a data entity created at a specific time, wherein at a first time the version is an active version and at a second time the version is a previous version, the system comprising: a database for storing the plurality of versions of the data entity as they are created; a cache for storing the first active version of the data entity; wherein when a new version of the data entity is created by updating at least one parameter of the data entity, a new active version replaces the first active version stored in a cache and the first active version becomes a previous version stored in the cache; and wherein the new active version includes a list of the or each previous version of the data entity with an associated time at which the version was an active version, such that by identifying the version of the data entity which was active at the specific time the parameter is determined.

Method and apparatus for version management of a data entity

Growing community of inventors

Nice, France

Rémy Gole