github.hscsec.cn/dgraph-io/dgraph@v1.1.0/README.md (about) 1  2 3 **Fast, Transactional, Distributed Graph Database.** 4 5 [](https://docs.dgraph.io) 6 [/statusIcon.svg)](https://teamcity.dgraph.io/viewLog.html?buildTypeId=Dgraph_Ci&buildId=lastFinished&guest=1) 7 [](https://coveralls.io/github/dgraph-io/dgraph?branch=master) 8 [](https://goreportcard.com/report/github.com/dgraph-io/dgraph) 9 10 Dgraph is a horizontally scalable and distributed graph database, providing ACID transactions, consistent replication and linearizable reads. It's built from ground up to perform for 11 a rich set of queries. Being a native graph database, it tightly controls how the 12 data is arranged on disk to optimize for query performance and throughput, 13 reducing disk seeks and network calls in a cluster. 14 15 16 Dgraph's goal is to provide [Google](https://www.google.com) production level scale and throughput, 17 with low enough latency to be serving real time user queries, over terabytes of structured data. 18 Dgraph supports [GraphQL-like query syntax](https://docs.dgraph.io/master/query-language/), and responds in [JSON](http://www.json.org/) and [Protocol Buffers](https://developers.google.com/protocol-buffers/) over [GRPC](http://www.grpc.io/) and HTTP. 19 20 ## Status 21 22 Dgraph is [at version 1.0.x][rel] and is production ready. Apart from the vast open source community, it is being used in 23 production at multiple Fortune 500 companies, and by 24 [Intuit Katlas](https://github.com/intuit/katlas) and [VMware Purser](https://github.com/vmware/purser). 25 26 [rel]: https://github.com/dgraph-io/dgraph/releases 27 28 ## Quick Install 29 30 The quickest way to install Dgraph is to run this command on Linux or Mac. 31 32 ```bash 33 curl https://get.dgraph.io -sSf | bash 34 ``` 35 36 ## Install with Docker 37 38 If you're using Docker, you can use the [official Dgraph image](https://hub.docker.com/r/dgraph/dgraph/). 39 40 ```bash 41 docker pull dgraph/dgraph:latest 42 ``` 43 44 ## Install from Source 45 46 If you want to install from source, you can use `go get` to install to `$GOPATH/bin`. 47 48 ```bash 49 go get -v github.com/dgraph-io/dgraph/dgraph 50 ``` 51 52 ## Get Started 53 **To get started with Dgraph, follow:** 54 55 - Installation to queries in 3 steps via [docs.dgraph.io](https://docs.dgraph.io/get-started/). 56 - A longer interactive tutorial via [tour.dgraph.io](https://tour.dgraph.io). 57 - Tutorial and 58 presentation videos on [YouTube channel](https://www.youtube.com/channel/UCghE41LR8nkKFlR3IFTRO4w/featured). 59 60 ## Is Dgraph the right choice for me? 61 62 - Do you have more than 10 SQL tables, connected to each other via foreign keys? 63 - Do you have sparse data, which doesn't elegantly fit into SQL tables? 64 - Do you want a simple and flexible schema, which is readable and maintainable 65 over time? 66 - Do you care about speed and performance at scale? 67 68 If the answers to the above are YES, then Dgraph would be a great fit for your 69 application. Dgraph provides NoSQL like scalability while providing SQL like 70 transactions and ability to select, filter and aggregate data points. It 71 combines that with distributed joins, traversals and graph operations, which 72 makes it easy to build applications with it. 73 74 ## Dgraph compared to other graph DBs 75 76 | Features | Dgraph | Neo4j | Janus Graph | 77 | -------- | ------ | ----- | ----------- | 78 | Architecture | Sharded and Distributed | Single server (+ replicas in enterprise) | Layer on top of other distributed DBs | 79 | Replication | Consistent | None in community edition (only available in enterprise) | Via underlying DB | 80 | Data movement for shard rebalancing | Automatic | Not applicable (all data lies on each server) | Via underlying DB | 81 | Language | GraphQL inspired | Cypher, Gremlin | Gremlin | 82 | Protocols | Grpc / HTTP + JSON / RDF | Bolt + Cypher | Websocket / HTTP | 83 | Transactions | Distributed ACID transactions | Single server ACID transactions | Not typically ACID 84 | Full Text Search | Native support | Native support | Via External Indexing System | 85 | Regular Expressions | Native support | Native support | Via External Indexing System | 86 | Geo Search | Native support | External support only | Via External Indexing System | 87 | License | Apache 2.0 | GPL v3 | Apache 2.0 | 88 89 ## Users 90 - **Dgraph official documentation is present at [docs.dgraph.io](https://docs.dgraph.io).** 91 - For feature requests or questions, visit 92 [https://discuss.dgraph.io](https://discuss.dgraph.io). 93 - Check out [the demo at dgraph.io](http://dgraph.io) and [the visualization at 94 play.dgraph.io](http://play.dgraph.io/). 95 - Please see [releases tab](https://github.com/dgraph-io/dgraph/releases) to 96 find the latest release and corresponding release notes. 97 - [See the Roadmap](https://github.com/dgraph-io/dgraph/issues/1) for list of 98 working and planned features. 99 - Read about the latest updates from Dgraph team [on our 100 blog](https://open.dgraph.io/). 101 - Watch tech talks on our [YouTube 102 channel](https://www.youtube.com/channel/UCghE41LR8nkKFlR3IFTRO4w/featured). 103 104 ## Developers 105 - See a list of issues [that we need help with](https://github.com/dgraph-io/dgraph/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22). 106 - Please see [Contributing to Dgraph](https://github.com/dgraph-io/dgraph/blob/master/CONTRIBUTING.md) for guidelines on contributions. 107 108 ## Client Libraries 109 The Dgraph team maintain a number of [officially supported client libraries](https://docs.dgraph.io/clients/). There are also libraries contributed by the community [unofficial client libraries](https://docs.dgraph.io/clients#unofficial-dgraph-clients). 110 111 ## Contact 112 - Please use [discuss.dgraph.io](https://discuss.dgraph.io) for documentation, questions, feature requests and discussions. 113 - Please use [Github issue tracker](https://github.com/dgraph-io/dgraph/issues) for filing bugs or feature requests. 114 - Join [](http://slack.dgraph.io). 115 - Follow us on Twitter [@dgraphlabs](https://twitter.com/dgraphlabs).