BASE.md

EJDB 2.0

EJDB2 is an embeddable JSON database engine published under MIT license.

The Story of the IT-depression, birds and EJDB 2.0

• C11 API
• Single file database
• Online backups support
• 500K library size for Android
• iOS / Android / React Native / Flutter integration
• Simple but powerful query language (JQL) as well as support of the following standards:
  • rfc6902 JSON Patch
  • rfc7386 JSON Merge patch
  • rfc6901 JSON Path
• Support of collection joins
• Powered by iowow.io - The persistent key/value storage engine
• Provides HTTP REST/Websockets network endpoints with help of facil.io
• JSON documents are stored in using fast and compact binn binary format

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• Native language bindings
• Supported platforms
  • OSX
  • iOS
  • Linux
  • Android
  • Windows
• JQL query language
  • Grammar
  • Quick into
  • Data modification
  • Projections
  • Collection joins
  • Sorting
  • Query options
• Indexes and performance
• Network API
  • HTTP API
  • Websockets API
• C API
• License

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EJDB2 platforms matrix

	Linux	macOS	iOS	Android	Windows
C library	✔️	✔️	✔️	✔️	✔️1
NodeJS	✔️	✔️			❌3
DartVM	✔️	✔️2			❌3
Flutter			✔️	✔️
React Native			❌4	✔️
Swift	✔️	✔️	✔️
Java	✔️	✔️		✔️	✔️2

[1] No HTTP/Websocket support #257
[2] Binaries are not distributed with dart pub. You can build it manually
[3] Can be build, but needed a linkage with windows node/dart libs.
[4] Porting in progress #273

Native language bindings

• NodeJS
• Dart
• Java
• Android support
• Swift | iOS
• React Native
• Flutter

Unofficial Native language bindings

• .Net
  • https://github.com/kmvi/ejdb2-csharp
• Haskell
  • https://github.com/cescobaz/ejdb2haskell
  • https://hackage.haskell.org/package/ejdb2-binding
• Pharo
  • https://github.com/pharo-nosql/pharo-ejdb

Status

• EJDB 2.0 core engine is well tested and used in various heavily loaded deployments
• Tested on Linux and OSX platforms. Limited Windows support
• Old EJDB 1.x version can be found in separate ejdb_1.x branch. We are not maintaining ejdb 1.x.

Use cases

• Softmotions trading robots platform
• Gimme - a social toy tokens exchange mobile application. EJDB2 is used both on mobile and server sides.

Are you using EJDB? Let me know!

macOS / OSX

EJDB2 code ported and tested on High Sierra / Mojave / Catalina

See also EJDB2 Swift binding for OSX, iOS and Linux

brew install ejdb

or

mkdir build && cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
make install

Linux

Ubuntu/Debian

PPA repository

sudo add-apt-repository ppa:adamansky/ejdb2
sudo apt-get update
sudo apt-get install ejdb2

Building debian packages

cmake v3.15 or higher required

mkdir build && cd build
cmake .. -DCMAKE_BUILD_TYPE=Release -DPACKAGE_DEB=ON
make package

RPM based Linux distributions

mkdir build && cd build
cmake .. -DCMAKE_BUILD_TYPE=Release -DPACKAGE_RPM=ON
make package

Windows

EJDB2 can be cross-compiled for windows

Note: HTTP/Websocket network API is disabled and not supported on Windows until port of http://facil.io library (#257)

Nodejs/Dart bindings not yet ported to Windows.

Cross-compilation Guide for Windows