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SDKs such as those for .NET, Java, and Python implement connection pooling to reuse HTTP connections to the database endpoint, optimizing resource usage and performance. This functionality applies to all Cosmos DB account types, including provisioned throughput and serverless models.
The throughput provisioned on an Azure Cosmos container is exclusively reserved for that container. [12] The default maximum RUs that can be provisioned per database and per container are 1,000,000 RUs, but customers can get this limit increased by contacting customer support.
Optimistic concurrency control (OCC), also known as optimistic locking, is a non-locking concurrency control method applied to transactional systems such as relational database management systems and software transactional memory. OCC assumes that multiple transactions can frequently complete without interfering with each other.
The tradeoff between availability, consistency and latency, as described by the PACELC theorem. In database theory, the PACELC theorem is an extension to the CAP theorem.It states that in case of network partitioning (P) in a distributed computer system, one has to choose between availability (A) and consistency (C) (as per the CAP theorem), but else (E), even when the system is running ...
RocksDB is free and open-source software, released originally under a BSD 3-clause license. [7] [8] [9] However, in July 2017 the project was migrated to a dual license of both Apache 2.0 and GPLv2 license. [10] This change helped its adoption in Apache Software Foundation's projects after blacklist of the previous BSD+Patents license clause ...
The database engine was re-branded to IBM Cloudscape and releases continued, mainly focusing on embedded use with IBM's Java products and middleware. In August 2004, IBM contributed the code to the Apache Software Foundation as Derby, an incubator project sponsored by the Apache DB project. [ 5 ]
Packet loss indirectly reduces throughput as some transport layer protocols interpret loss as an indication of congestion and adjust their transmission rate to avoid congestive collapse. When reliable delivery is necessary, packet loss increases latency due to additional time needed for retransmission.
Migrations can be written in SQL (database-specific syntax such as PL/SQL, T-SQL, etc is supported) or Java (for advanced data transformations or dealing with LOBs). It has a command-line client, a Java API (also works on Android ) for migrating the database on application startup, a Maven plugin, and a Gradle plugin.