--- title: "ArangoDB 2.4: EcmaScript 6, AQL Speedup and Hypermedia API Builder - ArangoDB" description: This version is deprecated. Download the new version of ArangoDB We are proud to announce the release of Version 2.4 of our multi-model database ArangoDB. It’s ready for download now and available for all major platforms. This release is a major step forward. Use Foxx to create your favorite microservice with a few clicks, dockerize… --- ArangoDB 3.12 Product Release Announcement! Read the blog for details. [Read Blog](https://arangodb.com/2024/03/arangodb-3-12-performance-for-all-your-data-models/) [![logo](https://blog.arangodb.com/hs-fs/hubfs/Imported_Blog_Media/logo.png?width=301&height=50&name=logo.png "logo")](https://arango.ai) ### Why Graph [The Rise of Graph](https://arangodb.com/the-rise-of-graph/) [The Graph ML Gamechanger](https://arangodb.com/the-graph-ml-gamechanger/) [Consolidate to Graph](https://arangodb.com/graph-vs-relational/) [Graph DB Basics](https://arangodb.com/graph-database/) ### Products [Managed Graph DB](https://arangodb.com/arangograph-managedgraphdb/) [Self-Managed Graph DB](https://arangodb.com/arangograph-selfmanaged/) [Managed Graph ML](https://arangodb.com/managed-ml-graph/) [Community Edition](https://arangodb.com/community-server/) [Compare Products](https://arangodb.com/subscriptions/) ### Solutions Use Cases Industries Solution Accelerators - [Cyber/Threat Mgmt](https://arangodb.com/solutions/use-cases/cyber-threat-management/) - [Fraud Detection](https://arangodb.com/solutions/use-cases/fraud-detections/) - [Supply Chain](https://arangodb.com/solutions/use-cases/supply-chain/) - [Network Asset Management](https://arangodb.com/solutions/use-cases/network-asset-management/) - [Customer & Patient 360](https://blog.arangodb.com/solutions/use-case/customer-and-patient-360/) - [Recommendations](https://arangodb.com/solutions/use-cases/recommendations/) - [Case Management](https://blog.arangodb.com/solutions/use-case/case-management/) - [Geospatial Analysis](https://arangodb.com/solutions/use-cases/geospatial/) - [Master Data Mgmt](https://arangodb.com/solutions/use-cases/master-data-management/) - [Software & Technology](https://arangodb.com/arangodb-for-software-tech/) - [Financial Services](https://arangodb.com/arangodb-for-financial-services/) - [Tele Communication](https://arangodb.com/telecommunications-and-network/) - [E-commerce](https://arangodb.com/arangodb-for-e-commerce/) - [Healthcare](https://arangodb.com/arangodb-for-healthcare/) - [Government](https://arangodb.com/arangodb-for-government/) - [Aerospace & Defence](https://arangodb.com/arangodb-for-aerospace-defense/) - [Manufacturing](https://arangodb.com/arangodb-for-manufacturing/) - [Enterprise Knowledge Graphs](https://arangodb.com/resources/white-papers/enterprise-knowledge-graphs/) - [Entity Resolution](https://arangodb.com/entity-resolution/) - [Traceability/Lineage](https://arangodb.com/traceability-and-lineage/) - [Contexual Relevance](https://arangodb.com/contextual-relevance/) ### Developers Capabilities Integrations Differentiators - [Graph Traversals](https://arangodb.com/graph-traversals/) - [Multi-Model DB](https://arangodb.com/multi-model-db/) - [LLM + Knowledge Graph](https://arangodb.com/llm-knowledge-graph/) - [Graph ML](https://arangodb.com/managed-ml-graph/) - [Advanced Geospatial](https://arangodb.com/advanced-geospatial/) - [Document Store](https://arangodb.com/document-store/) - [Search Engine](https://arangodb.com/full-text-search-engine/) - [Security & Compliance](https://arangodb.com/security/) - [Data Masking](https://arangodb.com/Data-masking/) - [Key/Value DB](https://arangodb.com/integrated-key-value-support/) - [Clients / Languages](https://arangodb.com/clients-languages/) - [BI Tools](https://arangodb.com/bi-tools-support/) - [Containers](https://arangodb.com/container-support/) - [Community driven](https://arangodb.com/community-driven/) - [Model Flexibility](https://arangodb.com/model-flexibility/) - [Graph Scalability](https://arangodb.com/graph-scalability/) - [Performance at Scale](https://arangodb.com/performance-at-scale/) - [Highest Availability](https://arangodb.com/highest-availability/) - [Unified Query Language](https://arangodb.com/unified-query-languageaql/) - [Graph + Native Document](https://arangodb.com/graph-document/) - [Graph + Native Search](https://arangodb.com/graph-search/) - [Cost Effective](https://arangodb.com/cost-effective-development-operation/) - [Full Geospatial](https://arangodb.com/full-geospatial/) ### Customers [All Case Studies](https://arangodb.com/solutions/solutions-customers/#all) [Government & Cyber](https://arangodb.com/solutions/solutions-customers/#Government-Cyber) [Manufacturing & Supply Chain](https://arangodb.com/solutions/solutions-customers/#Manufacturing-Supply-Chain) [Healthcare & Science](https://arangodb.com/solutions/solutions-customers/#Healthcare-Science) [Retail & Commerce](https://arangodb.com/solutions/solutions-customers/#Retail-Commerce) [Technology](https://arangodb.com/solutions/solutions-customers/#Technology) [Education](https://arangodb.com/solutions/solutions-customers/#Education) [Telco](https://arangodb.com/solutions/solutions-customers/#Telco) [Financial Services](https://arangodb.com/solutions/solutions-customers/#Financial-Services) ### Learn [Documentation](https://docs.arangodb.com/stable/) [Developer Hub](https://developer.arangodb.com/) [ArangoDB University](https://university.arangodb.com/) [Blog](https://arangodb.com/blog/) [Certification](https://arangodb.com/learn/certification/) [Community](https://arangodb.com/community/) [Events](https://arangodb.com/events/) [Resources](https://arangodb.com/resources/) [Training Center](https://arangodb.com/learn/) ### Company [About Us](https://arangodb.com/about-us/) [Team](https://arangodb.com/about-arangodb/) [Partners](https://arangodb.com/partners/) [News](https://arangodb.com/news/) [Careers](https://arangodb.applytojob.com/apply) ### Pricing - Why Graph - [The Rise of Graph](https://arangodb.com/the-rise-of-graph/) - [The Graph ML Gamechanger](https://arangodb.com/the-graph-ml-gamechanger/) - [Consolidate to Graph](https://arangodb.com/graph-vs-relational/) - [Graph DB Basics](https://arangodb.com/graph-database/) - Products - [Managed Graph DB](https://arangodb.com/arangograph-managedgraphdb/) - [Self-Managed Graph DB](https://arangodb.com/arangograph-selfmanaged/) - [Managed Graph ML](https://arangodb.com/managed-ml-graph/) - [Community Edition](https://arangodb.com/community-server/) - [Compare Products](https://arangodb.com/subscriptions/) - Solutions - Use Cases - [Cyber/Threat Mgmt](https://arangodb.com/solutions/use-cases/cyber-threat-management/) - [Fraud Detection](https://arangodb.com/solutions/use-cases/fraud-detections/) - [Supply Chain](https://arangodb.com/solutions/use-cases/supply-chain/) - [Network Asset Management](https://arangodb.com/solutions/use-cases/network-asset-management/) - [Customer & Patient 360](https://arangodb.com/solutions/use-cases/customer-and-patient-360/) - [Recommendations](https://arangodb.com/solutions/use-cases/recommendations/) - [Case Management](https://arangodb.com/solutions/use-cases/case-management/) - [Geospatial Analysis](https://arangodb.com/solutions/use-cases/geospatial/) - [Master Data Mgmt](https://arangodb.com/solutions/use-cases/master-data-management/) - Industries - [Software & Technology](https://arangodb.com/arangodb-for-software-tech/) - [Financial Services](https://arangodb.com/arangodb-for-financial-services/) - [Tele Communication](https://arangodb.com/telecommunications-and-network/) - [E-commerce](https://arangodb.com/arangodb-for-e-commerce/) - [Healthcare](https://arangodb.com/arangodb-for-healthcare/) - [Government](https://arangodb.com/arangodb-for-government/) - [Aerospace & Defence](https://arangodb.com/arangodb-for-aerospace-defense/) - [Manufacturing](https://arangodb.com/arangodb-for-manufacturing/) - Solution Accelerators - [Enterprise Knowledge Graphs](https://arangodb.com/resources/white-papers/enterprise-knowledge-graphs/) - [Entity Resolution](https://arangodb.com/entity-resolution/) - [Traceability/Lineage](https://arangodb.com/traceability-and-lineage/) - [Contexual Relevance](https://arangodb.com/contextual-relevance/) - Customers - [All Case Studies](https://arangodb.com/solutions/solutions-customers/#all) - [Government & Cyber](https://arangodb.com/solutions/solutions-customers/#Government-Cyber) - [Manufacturing & Supply Chain](https://arangodb.com/solutions/solutions-customers/#Manufacturing-Supply-Chain) - [Healthcare & Science](https://arangodb.com/solutions/solutions-customers/#Healthcare-Science) - [Retail & Commerce](https://arangodb.com/solutions/solutions-customers/#Retail-Commerce) - [Technology](https://arangodb.com/solutions/solutions-customers/#Technology) - [Education](https://arangodb.com/solutions/solutions-customers/#Education) - [Telco](https://arangodb.com/solutions/solutions-customers/#Telco) - [Financial Services](https://arangodb.com/solutions/solutions-customers/#Financial-Services) - Learn - [Documentation](https://docs.arangodb.com/stable/) - [Developer Hub](https://developer.arangodb.com/) - [ArangoDB University](https://university.arangodb.com/) - [Blog](https://arangodb.com/blog/) - [Certification](https://arangodb.com/learn/certification/) - [Community](https://arangodb.com/community/) - [Events](https://arangodb.com/events/) - [Resources](https://arangodb.com/resources/) - [Training Center](https://arangodb.com/learn/) - Company - [About Us](https://arangodb.com/about-us/) - [Team](https://arangodb.com/about-arangodb/) - [Partners](https://arangodb.com/partners/) - [News](https://arangodb.com/news/) - [Careers](https://arangodb.applytojob.com/apply) - [Pricing](https://arangodb.com/download-major/pricing/) [**Start Free** ArangoGraph Cloud](https://dashboard.arangodb.cloud/signup?acceptedTermsAndConditions=1) [**Download Now** ArangoDB Enterprise](https://arangodb.com/download-arangodb-enterprise/) ![Vector-5](https://blog.arangodb.com/hubfs/Imported_Blog_Media/search.svg) # ArangoDB 2.4: EcmaScript 6, AQL Speedup and Hypermedia API Builder January 15, 2015 Tags: [Releases](https://blog.arangodb.com/blog/topic/releases), [Release](https://blog.arangodb.com/blog/topic/release) [Twitter](https://twitter.com/intent/tweet?url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4) [LinkedIn](http://www.linkedin.com/shareArticle?mini=true&url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4) [Reddit](https://www.reddit.com/share?url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4) [Yahoo](https://plus.google.com/share?url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4%3Futm_medium%3Dsocial%26utm_source%3Dgoogle_plus) ![](https://blog.arangodb.com/hubfs/ArangoDB-Blog/clock.svg)Estimated reading time: 6 minutes *This version is deprecated. [Download the new version](https://www.arangodb.com/download) of ArangoDB* We are proud to announce the release of **Version 2.4** of our multi-model database ArangoDB. It’s [ready for download](https://www.arangodb.com/download) now and available for all major platforms. > This release is a major step forward. Use Foxx to create your favorite microservice with a few clicks, dockerize it and access it via a REST/Web API from everywhere. – Dr. Frank Celler (CTO) You can now use **EcmaScript 6** features like iterators, symbols, maps and sets by default and enable even more ES6 features with ArangoDB start options. The V8 engine upgrade in ArangoDB 2.4 also improves performance and speeds up V8 garbage collections. The **ArangoDB query language (AQL)** gets more efficient group count calculation queries, an optional return value for AQL data-modification queries and improved index handling in filtering AQL queries. **Foxx 2.0**: The new **Foxx-Generator** is a framework that enables developers to **build Hypermedia APIs** easily. Developers can create Web APIs based on a semantic description of entities and transitions using a statechart alike design approach. Additional to the recently added [job queues](https://www.arangodb.com/docs/stable/) and [authentication](https://www.arangodb.com/docs/stable/) services, Foxx got a **new web-frontend** to easily create new or install Foxx applications from Github or the ArangoDB Store. Try the new tutorial Foxx in 10 Minutes to build your first Foxx application. Starting with a new Foxx app has never been easier. Along with ArangoDB the **new light-weight JavaScript driver [arangojs](https://github.com/arangodb/arangojs) 3.0** is ready to use. [Download](https://www.arangodb.com/download) the current 2.4 release and start building your own applications on top of ArangoDB! Here are the release notes of ArangoDB 2.4: ### V8 Version Upgrade The built-in version of V8 has been upgraded from 3.16.14 to 3.29.59. This activates several **ES6** (also dubbed *Harmony* or *ES.next*) features in ArangoDB, both in the ArangoShell and the ArangoDB server. They can be used for scripting and in server-side actions such as Foxx routes, traversals etc. The following ES6 features are available in ArangoDB 2.4 by default: - iterators - the `of` operator - symbols - predefined collections types (Map, Set etc.) - typed arrays Many other ES6 features are disabled by default, but can be made available by starting arangod or arangosh with the appropriate options: - arrow functions - proxies - generators - String, Array, and Number enhancements - constants - enhanced object and numeric literals ![Arrow function from ES6](https://blog.arangodb.com/hs-fs/hubfs/Imported_Blog_Media/arrow_function_ec6-1.png?width=791&height=140&name=arrow_function_ec6-1.png)(Arrow function with 2 parameters) To activate all these ES6 features in arangod or arangosh, start it with the following options: ``` arangosh --javascript.v8-options="--harmony --harmony_generators" ``` More details on the available ES6 features can be found in [this blog post](https://jsteemann.github.io/blog/2014/12/19/using-es6-features-in-arangodb/). ### AQL **Added optional return value for AQL data-modification queries.** This allows returning the documents inserted, removed or updated with the query, e.g. FOR doc IN docs REMOVE doc.\_key IN docs LET removed = OLD RETURN removed ``` FOR doc IN docs INSERT { } IN docs LET inserted = NEW RETURN inserted FOR doc IN docs UPDATE doc._key WITH { } IN docs LET previous = OLD RETURN previous FOR doc IN docs UPDATE doc._key WITH { } IN docs LET updated = NEW RETURN updated ``` The variables `OLD` and `NEW` are automatically available when a `REMOVE`, `INSERT`, `UPDATE` or `REPLACE` statement is immediately followed by a `LET` statement. See the [full change log](https://www.arangodb.com/docs/stable/) for further information. **Added optional `COUNT` clause to AQL `COLLECT`** This allows more efficient group count calculation queries, e.g. ``` FOR doc IN collection COLLECT age = doc.age WITH COUNT INTO length RETURN { age: age, count: length } ``` A count-only query is also possible: ``` FOR doc IN collection COLLECT WITH COUNT INTO length RETURN length ``` Finally, `COLLECT ... INTO` has been extended to support just another variant that can reduce the amount of copying inside a query. ``` FOR doc IN collection COLLECT age = doc.age INTO g = doc.dateRegistered RETURN { age: age, maxDate: MAX(g) } ``` **AQL: range optimizations for IN and OR** This change enables usage of indexes for several additional cases. Filters containing the `IN` operator can now make use of indexes, and multiple OR- or AND-combined filter conditions can now also use indexes if the filters are accessing the same indexed attribute. Here are a few examples of queries that can now use indexes but couldn’t before: ``` FOR doc IN collection FILTER doc.indexedAttribute == 1 || doc.indexedAttribute > 99 RETURN doc FOR doc IN collection FILTER doc.indexedAttribute IN [ 3, 42 ] || doc.indexedAttribute > 99 RETURN doc FOR doc IN collection FILTER (doc.indexedAttribute > 2 && doc.indexedAttribute < 10) || (doc.indexedAttribute > 23 && doc.indexedAttribute < 42) RETURN doc ``` ### Added Foxx generator for building Hypermedia APIs ArangoDB 2.4 is shipped with FoxxGenerator, a framework for building standardized Hypermedia APIs easily. The generated APIs can be consumed with client tools that understand [Siren](https://github.com/kevinswiber/siren). Hypermedia is the simple idea that our HTTP APIs should have links between their endpoints in the same way that our web sites have links between them. FoxxGenerator is based on the idea that you can represent an API as a statechart: Every endpoint is a state and the links are the transitions between them. Using your description of states and transitions, it can then create an API for you. ![sm2](https://blog.arangodb.com/hs-fs/hubfs/Imported_Blog_Media/sm21-900x240.png?width=900&height=240&name=sm21-900x240.png "sm2") The FoxxGenerator can create APIs based on a semantic description of entities and transitions. A blog series on the use cases and how to use the Foxx generator is here: - Building Hypermedia APIs – Links and Forms in JSON - [Building Hypermedia APIs – a Design Approach using Statecharts](https://blog.arangodb.com/blog/2014/12/building-hypermedia-apis-design) - [Building Hypermedia APIs – FoxxGenerator](https://blog.arangodb.com/blog/2014/12/building-hypermedia-apis-foxxgenerator) A cookbook recipe for getting started with FoxxGenerator is [here](https://www.arangodb.com/docs/stable/foxx.html). ### New Applications tab in web interface The **applications tab** got a complete redesign. It will now only show applications that are currently running on ArangoDB. For a selected application, a new detailed view provides the following information: author, license, version, contributors, download links and API documentation. To install a new application, a new dialogue is now available. ![AppTab](https://blog.arangodb.com/hs-fs/hubfs/Imported_Blog_Media/AppTab-900x519.png?width=900&height=519&name=AppTab-900x519.png "AppTab") It provides the features already available in the console application `foxx-manager` plus some more: - install an application from Github - install an application from a zip file - install an application from ArangoDB’s application store - create a new application from scratch: this feature uses a generator to create a Foxx application with pre-defined CRUD methods for a given list of collections. The generated Foxx app can either be downloaded as a zip file or be installed on the server. ### New JavaScript driver arangojs The official ArangoDB low-level JavaScript client for node.js and browsers, **arangojs 3.0**, is available from npm. ``` npm install arangojs ``` All asynchronous functions now take node-style callback functions (or “errbacks”) with the following arguments: `err`: an Error object if an error occurred, or null if no error occurred. `result`: the function’s result (if applicable). For expected API errors, `err` will be an instance of `ArangoError`. The new driver provides just enough abstraction to be useful on its own but also keeps it lean enough to provide a basis for custom abstraction layers. You can add the promises library of your choice (e.g. bluebird or Q) using the node-style callbacks of arangojs. With the earlier released [AQL query builder module](https://www.npmjs.com/package/aqb) you can write AQL queries in JavaScript. There is [an example GitHub crawler](https://blog.arangodb.com/blog/2015/01/crawling-github-promises/) that shows how you can use the new driver. [Twitter](https://twitter.com/intent/tweet?url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4) [LinkedIn](http://www.linkedin.com/shareArticle?mini=true&url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4) [Reddit](https://www.reddit.com/share?url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4) [Yahoo](https://plus.google.com/share?url=https://blog.arangodb.com/blog/2015/01/arangodb-2-4%3Futm_medium%3Dsocial%26utm_source%3Dgoogle_plus) ![Picture of Frank Celler](https://blog.arangodb.com/hubfs/Imported_Blog_Media/Authors/Author-avatar.png) January 15, 2015 , [Frank Celler](https://blog.arangodb.com/blog/author/frank-celler) Frank is both entrepreneur and backend developer, developing mostly memory databases for two decades. He is the CTO and co-founder of ArangoDB. Try to challenge Frank asking him questions on C, C++ and MRuby. Besides Frank organizes Cologne’s NoSQL group & is an active member of NoSQL community. ### Leave a Comment Tags - [General](https://blog.arangodb.com/blog/topic/general) - [Release](https://blog.arangodb.com/blog/topic/release) - [Community](https://blog.arangodb.com/blog/topic/community) - [Releases](https://blog.arangodb.com/blog/topic/releases) - [Performance](https://blog.arangodb.com/blog/topic/performance) - [Tutorial](https://blog.arangodb.com/blog/topic/tutorial) - [Foxx](https://blog.arangodb.com/blog/topic/foxx) - [AQL](https://blog.arangodb.com/blog/topic/aql) - [API](https://blog.arangodb.com/blog/topic/api) - [Newsletter](https://blog.arangodb.com/blog/topic/newsletter) - [Cluster](https://blog.arangodb.com/blog/topic/cluster) - [Graph](https://blog.arangodb.com/blog/topic/graph) - [Graphs](https://blog.arangodb.com/blog/topic/graphs) - [Documentation](https://blog.arangodb.com/blog/topic/documentation) - [Javascript](https://blog.arangodb.com/blog/topic/javascript) - [Query Language](https://blog.arangodb.com/blog/topic/query-language) - 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