RaimaDB
RaimaDB, an embedded time series database that can be used for Edge and IoT devices, can run in-memory. It is a lightweight, secure, and extremely powerful RDBMS. It has been field tested by more than 20 000 developers around the world and has been deployed in excess of 25 000 000 times.
RaimaDB is a high-performance, cross-platform embedded database optimized for mission-critical applications in industries such as IoT and edge computing. Its lightweight design makes it ideal for resource-constrained environments, supporting both in-memory and persistent storage options. RaimaDB offers flexible data modeling, including traditional relational models and direct relationships through network model sets. With ACID-compliant transactions and advanced indexing methods like B+Tree, Hash Table, R-Tree, and AVL-Tree, it ensures data reliability and efficiency. Built for real-time processing, it incorporates multi-version concurrency control (MVCC) and snapshot isolation, making it a robust solution for applications demanding speed and reliability.
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KrakenD
Engineered for peak performance and efficient resource use, KrakenD can manage a staggering 70k requests per second on just one instance. Its stateless build ensures hassle-free scalability, sidelining complications like database upkeep or node synchronization.
In terms of features, KrakenD is a jack-of-all-trades. It accommodates multiple protocols and API standards, offering granular access control, data shaping, and caching capabilities. A standout feature is its Backend For Frontend pattern, which consolidates various API calls into a single response, simplifying client interactions.
On the security front, KrakenD is OWASP-compliant and data-agnostic, streamlining regulatory adherence. Operational ease comes via its declarative setup and robust third-party tool integration. With its open-source community edition and transparent pricing model, KrakenD is the go-to API Gateway for organizations that refuse to compromise on performance or scalability.
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Hawkular Metrics
Hawkular Metrics is a robust, asynchronous, multi-tenant engine designed for long-term metrics storage, utilizing Cassandra for its data management and REST as its main interface. This segment highlights some of the essential characteristics of Hawkular Metrics, while subsequent sections will delve deeper into these features as well as additional functionalities. One of the standout aspects of Hawkular Metrics is its impressive scalability; its architecture allows for operation on a single instance with just one Cassandra node, or it can be expanded to encompass multiple nodes to accommodate growing demands. Moreover, the server is designed with a stateless architecture, facilitating easy scaling. Illustrated in the accompanying diagram are various deployment configurations enabled by the scalable design of Hawkular Metrics. The upper left corner depicts the most straightforward setup involving a lone Cassandra node connected to a single Hawkular Metrics node, while the lower right corner demonstrates a scenario where multiple Hawkular Metrics nodes can operate in conjunction with fewer Cassandra nodes, showcasing flexibility in deployment. Overall, this system is engineered to meet the evolving requirements of users efficiently.
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Apache Druid
Apache Druid is a powerful open-source distributed data storage solution that integrates principles from data warehousing, timeseries databases, and search technologies to deliver exceptional performance for real-time analytics across various applications. Its innovative design synthesizes essential features from these three types of systems, which is evident in its ingestion layer, storage format, query execution, and foundational architecture. By individually storing and compressing each column, Druid efficiently accesses only the necessary data for specific queries, enabling rapid scanning, sorting, and grouping operations. Additionally, Druid utilizes inverted indexes for string values to enhance search and filtering speeds. Equipped with ready-to-use connectors for platforms like Apache Kafka, HDFS, and AWS S3, Druid seamlessly integrates with existing data workflows. Its smart partitioning strategy greatly accelerates time-based queries compared to conventional databases, allowing for impressive performance. Users can easily scale their systems by adding or removing servers, with Druid automatically managing the rebalancing of data. Furthermore, its fault-tolerant design ensures that the system can effectively navigate around server failures, maintaining operational integrity. This resilience makes Druid an excellent choice for organizations seeking reliable analytics solutions.
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