databases, NoSQL data stores, Object-relational bindings, RDF Stores, Platforms for the Internet of Things, and new approaches to concurrency control are all hot topics. The cache does not interact with storage directly. Data stores can maintain keys in lexicographic order, allowing efficient retrieval of key ranges. How much data do we expect to handle? Source(s) and further reading Availability patterns There are two main patterns to support high availability: fail-over and replication. There is a vast amount of resources scattered throughout the web on system design principles. If there are a lot of writes, the read replicas can get bogged down with replaying writes and can't do as many reads. There are four qualities of a restful interface: Identify resources (URI in http) - use the same URI regardless of any operation. Conflict resolution comes more into play as more write nodes are added modern Tragedy vs. Classic Tragedy and as latency increases.
Encapsulation in OOP is a visibility degree declared, for example, through the public, private and protected access modifiers. Object - oriented components were added to C to become C, which is therefore both a procedural and object - oriented language. Layer 4 load balancers forward network packets to and from the upstream server, performing Network Address Translation (NAT). When loading large amounts of data, it might be faster to disable indices, load the data, then rebuild the indices. Each section contains links to more in-depth resources. Http APIs following rest tend to be used more often for public APIs. Your router or ISP provides information about which DNS server(s) to contact when doing a lookup. Complex data creation in most SQL ordbmss is based on preliminary schema definition via the user-defined type (UDT). Data can become stale if it is updated in the database.
Redis is useful as a simple message broker but messages can be lost. Source(s) and further reading: sharding Denormalization Denormalization attempts to improve read performance at the expense of some write performance. If the servers are public-facing, the DNS would need to know about the public IPs of both servers.
The Objective Point of View of the Balance Sheet, The Unidentified Flying Objects and The Aliens,