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PHP is a general-purpose scripting language geared towards web development. It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1993 and released in 1995. The PHP reference implementation is now produced by the PHP Group. PHP was originally an abbreviation of Personal Home Page, but it now stands for the recursive initialism PHP: Hypertext Preprocessor.
{Short description|Conversion process for computer data}}
Apache Nutch is a highly extensible and scalable open source web crawler software project.
ht://Dig is a free software indexing and searching system created in 1995 by Andrew Scherpbier while he was employed at San Diego State University. It can provide a search engine for a single website.
Apache Lucene is a free and open-source search engine software library, originally written in Java by Doug Cutting. It is supported by the Apache Software Foundation and is released under the Apache Software License. Lucene is widely used as a standard foundation for production search applications.
Apache Cocoon, usually abbreviated as Cocoon, is a web application framework built around the concepts of Pipeline, separation of concerns, and component-based web development. The framework focuses on XML and XSLT publishing and is built using the Java programming language. Cocoon's use of XML is intended to improve compatibility of publishing formats, such as HTML and PDF. The content management systems Apache Lenya and Daisy have been created on top of the framework. Cocoon is also commonly used as a data warehousing ETL tool or as middleware for transporting data between systems.
Content Repository API for Java (JCR) is a specification for a Java platform application programming interface (API) to access content repositories in a uniform manner. The content repositories are used in content management systems to keep the content data and also the metadata used in content management systems (CMS) such as versioning metadata. The specification was developed under the Java Community Process as JSR-170, and as JSR-283. The main Java package is javax.jcr.
Thrift is an interface definition language and binary communication protocol used for defining and creating services for numerous programming languages. It was developed at Facebook for "scalable cross-language services development" and as of 2020 is an open source project in the Apache Software Foundation.
Solr is an open-source enterprise-search platform, written in Java. Its major features include full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, database integration, NoSQL features and rich document handling. Providing distributed search and index replication, Solr is designed for scalability and fault tolerance. Solr is widely used for enterprise search and analytics use cases and has an active development community and regular releases.
Action Message Format (AMF) is a binary format used to serialize object graphs such as ActionScript objects and XML, or send messages between an Adobe Flash client and a remote service, usually a Flash Media Server or third party alternatives. The Actionscript 3 language provides classes for encoding and decoding from the AMF format.
A document-oriented database, or document store, is a computer program and data storage system designed for storing, retrieving and managing document-oriented information, also known as semi-structured data.
Protocol Buffers (Protobuf) is a free and open-source cross-platform data format used to serialize structured data. It is useful in developing programs that communicate with each other over a network or for storing data. The method involves an interface description language that describes the structure of some data and a program that generates source code from that description for generating or parsing a stream of bytes that represents the structured data.
This is a comparison of data serialization formats, various ways to convert complex objects to sequences of bits. It does not include markup languages used exclusively as document file formats.
Apache ZooKeeper is an open-source server for highly reliable distributed coordination of cloud applications. It is a project of the Apache Software Foundation.
Avro is a row-oriented remote procedure call and data serialization framework developed within Apache's Hadoop project. It uses JSON for defining data types and protocols, and serializes data in a compact binary format. Its primary use is in Apache Hadoop, where it can provide both a serialization format for persistent data, and a wire format for communication between Hadoop nodes, and from client programs to the Hadoop services. Avro uses a schema to structure the data that is being encoded. It has two different types of schema languages; one for human editing and another which is more machine-readable based on JSON.
MessagePack is a computer data interchange format. It is a binary form for representing simple data structures like arrays and associative arrays. MessagePack aims to be as compact and simple as possible. The official implementation is available in a variety of languages such as C, C++, C#, D, Erlang, Go, Haskell, Java, JavaScript (NodeJS), Lua, OCaml, Perl, PHP, Python, Ruby, Rust, Scala, Smalltalk, and Swift.
Sematext is a globally distributed organization that builds cloud and on-premises systems for application-performance monitoring, alerting, anomaly detection, centralized logging, log management, analytics, and real user monitoring. The company also provides search and Big Data consulting services and offers production support and training for Solr and Elasticsearch to clients. The company markets its core products to engineers and DevOps and its services to organizations using Elasticsearch, Solr, Lucene, Hadoop, HBase, Docker, Spark, Kafka and other platforms. Otis Gospodnetić founded Sematext. Sematext is headquartered in Brooklyn, NY, and is privately held.
FlatBuffers is a free software library implementing a serialization format similar to Protocol Buffers, Thrift, Apache Avro, SBE, and Cap'n Proto, primarily written by Wouter van Oortmerssen and open-sourced by Google. It supports “zero-copy” deserialization, so that accessing the serialized data does not require first copying it into a separate part of memory. This makes accessing data in these formats much faster than data in formats requiring more extensive processing, such as JSON, CSV, and in many cases Protocol Buffers. Compared to other serialization formats however, the handling of FlatBuffers requires usually more code, and some operations are not possible.
Ontotext GraphDB is a graph database and knowledge discovery tool compliant with RDF and SPARQL and available as a high-availability cluster. Ontotext GraphDB is used in various European research projects.
References
- ↑ "Serialization". PHP Internals Book. Retrieved 2020-07-05.
- ↑ "PHP: serialize - Manual". PHP: Hypertext Preprocessor. Retrieved 2020-07-05.
- ↑ "Response Writers | Apache Solr Reference Guide 8.5". lucene.apache.org. Retrieved 2020-07-05.
