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ES engine: perfect combination of high performance and Trade data for FMCG sectordynamic design ES (Elasticsearch) is a widely used distributed search and analysis engine, which is real-time search and analysis The leader in the engine global market. As a high-performance distributed search engine, the engine of ES is its most core part. In this article, we will discuss the performance and design of the ES engine, and how it achieves the perfect combination of high performance and dynamic design. Performance As a search engine, performance is one of the most important considerations of ES. It needs to be able to quickly search and analyze a large amount of data and return accurate results.In order to achieve this, the engine of ES has been optimized in the following aspects. First, ES adopts a distributed architecture. This means that it can run on multiple nodes and distribute data to different nodes. This architecture can reduce the pressure on a single node and improve the throughput and performance of the whole system. Second, ES uses inverted indexing technology. Reverse indexing is a technology that indexes data according to its attribute values, which can greatly improve search efficiency. ES stores the data as a document, indexes each field in the document, and builds a mapping table between the field value and the document. When the user searches, ES will find the matching records in the reverse index and return the relevant documents. Third, ES adopts cache technology. ES caches query results to avoid repeated queries and calculations.When querying the same data or performing similar operations, ES will directly return the cache results, thus improving search efficiency. Design As a modern search engine, the ES engine also has excellent performance in design. It uses dynamic design, which can automatically adapt to different environments and configurations. ES uses a technology called "cluster sniffing". At startup, ES will automatically find other nodes in the cluster and establish connections. If a new node is added, ES will also automatically detect and connect. This dynamic design can make ES adapt to the distributed environment and ensure its stable operation. In addition, ES also adopts a plug-in architecture, which can conveniently add and extend functions. With simple configuration, users can easily add new plug-ins to expand ES to support more functions and use cases.The combination of high performance and dynamic design is perfectly combined in the ES engine. By optimizing performance, ES enables it to quickly process a large amount of data and provide accurate results. Dynamic design enables ES to adapt to various configurations and changes in a distributed environment to ensure its stable operation. The advantages of this combination are particularly obvious in practical application. ES can easily adapt to the query and analysis of large-scale data, support load balancing and multi-node deployment. At the same time, it can also adapt to different application scenarios and needs, and provide customized solutions. In summary, the engine of ES adopts the concept of combining high performance and dynamic design. By optimizing performance, it enables it to quickly process large-scale data and provide accurate results. At the same time, it can adapt to the distributed environment and conveniently expand its functions and use cases.This concept and realization lays the foundation for ES's leading position in the field of search and analysis, and will continue to promote its future development.

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