THE DEVELOPMENT AND MAINTENANCE OF DISTRIBUTED DATABASE SYSTEM BASED ON POLYGLOT PERSISTENCE TECHNOLOGIES

The analysis of modern methods and technologies used for solving the problems creating maintaining distributed databases with a multi-variant storage was carried out. Distributed single mechanism accessing multi-variate data are singled use scalability mechanisms in direction horizontal scaling (in which certain number servers increased within one system) is considered.The justification Brewer'stheorem given, relation to restrictions compromise solutions regard-ing properties: consistency, availability, partition tolerance. In this theory, formalization definition prop-erties multimodel presented. extension Brewer'stheorem, requires trade-off between delays consistency when applying replication, principles basic availability eventual taken into account.The ways create support highly loaded e-commerce system persistence provided article. Examplesof possible architectural organizing access such using mix relational NoSQL (such as document, key-value, graph column storage) given. Such archi-tectural solution multi-model DBMS proposed overcome saving from business logic. shortcomings solution’s implementa-tions its improvement shown. particular, it all known models dynamic model format another model.This work provides an opportunity obtain analyze experimental at next stages study loading effects quantitative qualitative characteristics tolerance fixed parameter mechanism.