- :sunrise: Support routing priority. You can match different upstream services based on conditions such as header, args, priority, etc. under the same URI. [#998](https://github.com/apache/incubator-apisix/pull/998)
- When no route is matched, an error message is returned. To distinguish it from other 404 requests. [#1013](https://github.com/apache/incubator-apisix/pull/1013)
- The address of the dashboard `/apisix/admin` supports CORS. [#982](https://github.com/apache/incubator-apisix/pull/982)
- The jsonschema validator returns a clearer error message. [#1011](https://github.com/apache/incubator-apisix/pull/1011)
- Upgrade the `ngx_var` module to version 0.5. [#1005](https://github.com/apache/incubator-apisix/pull/1005)
- Upgrade the `lua-resty-etcd` module to version 0.8. [#980](https://github.com/apache/incubator-apisix/pull/980)
- In development mode, the number of workers is automatically adjusted to 1. [#926](https://github.com/apache/incubator-apisix/pull/926)
- Remove the nginx.conf file from the code repository. It is automatically generated every time and cannot be modified manually. [#974](https://github.com/apache/incubator-apisix/pull/974)
- :sunrise: Supported to run APISIX with tengine. [#683](https://github.com/apache/incubator-apisix/pull/683)
- :sunrise: Enabled HTTP2 and supported to set ssl_protocols. [#663](https://github.com/apache/incubator-apisix/pull/663)
- :sunrise: Advanced Debug Mode, Target module function's input arguments or returned value would be printed once this option is enabled. [#614](https://github.com/apache/incubator-apisix/pull/641)
- Support to install APISIX without dashboard. [#686](https://github.com/apache/incubator-apisix/pull/686)
- [Limit Count](https://github.com/apache/incubator-apisix/blob/master/doc/plugins/limit-count.md): Supported global limit count with `Redis Server`.[#624](https://github.com/apache/incubator-apisix/pull/624)
- :sunrise: **[support stand-alone mode](https://github.com/apache/incubator-apisix/blob/master/doc/stand-alone-cn.md)**: using yaml to update configurations of APISIX, more friendly to kubernetes. [#464](https://github.com/apache/incubator-apisix/pull/464)
- :sunrise: **[MQTT Proxy](https://github.com/apache/incubator-apisix/blob/master/doc/plugins/mqtt-proxy.md)**: support to load balance MQTT by `client_id`, both support MQTT 3.1 and 5.0. [#513](https://github.com/apache/incubator-apisix/pull/513)
This release brings many new features, such as IP black and white list, gPRC protocol transcoding, IPv6, IdP (identity provider) services, serverless, Change the default route to radix tree (**not downward compatible**), and more.
- :sunrise: **[gRPC transcoding](https://github.com/apache/incubator-apisix/blob/master/doc/plugins/grpc-transcoding.md)**: supports protocol transcoding so that clients can access your gRPC API by using HTTP/JSON. [#395](https://github.com/apache/incubator-apisix/issues/395)
- :sunrise: **[radix tree router](https://github.com/apache/incubator-apisix/blob/master/doc/router-radixtree.md)**: The radix tree is used as the default router implementation. It supports the uri, host, cookie, request header, request parameters, Nginx built-in variables, etc. as the routing conditions, and supports common operators such as equal, greater than, less than, etc., more powerful and flexible.**IMPORTANT: This change is not downward compatible. All users who use historical versions need to manually modify their routing to work properly.** [#414](https://github.com/apache/incubator-apisix/issues/414)
- Dynamic upstream supports more parameters, you can specify the upstream uri and host, and whether to enable websocket. [#451](https://github.com/apache/incubator-apisix/pull/451)
- Support for get values from cookies directly from `ctx.var`. [#449](https://github.com/apache/incubator-apisix/pull/449)
- Routing support IPv6. [#331](https://github.com/apache/incubator-apisix/issues/331)
- :sunrise: **[serverless](https://github.com/apache/incubator-apisix/blob/master/doc/plugins/serverless.md)**: With serverless support, users can dynamically run any Lua function on a gateway node. Users can also use this feature as a lightweight plugin.[#86](https://github.com/apache/incubator-apisix/pull/86)
- :sunrise: **support IdP**: Support external authentication services, such as Auth0, okta, etc., users can use this to connect to Oauth2.0 and other authentication methods. [#447](https://github.com/apache/incubator-apisix/pull/447)
- [rate limit](https://github.com/apache/incubator-apisix/blob/master/doc/plugins/limit-conn.md): Support for more restricted keys, such as `X-Forwarded-For` and `X-Real-IP`, and allows users to use Nginx variables, request headers, and request parameters as keys. [#228](https://github.com/apache/incubator-apisix/issues/228)
- [IP black and white list](https://github.com/apache/incubator-apisix/blob/master/doc/plugins/ip-restriction.md) Support IP black and white list for security. [#398](https://github.com/apache/incubator-apisix/pull/398)
- The `PATCH` API is supported and can be modified individually for a configuration without submitting the entire configuration. [#365](https://github.com/apache/incubator-apisix/pull/365)
- :sunrise: **Add the online version of the dashboard**，users can [experience APISIX](http://apisix.iresty.com/) without install. [#374](https://github.com/apache/incubator-apisix/issues/374)
- :sunrise: **[Health Check and Circuit Breaker](https://github.com/apache/incubator-apisix/blob/master/doc/health-check.md)**: Enable health check on the upstream node, and will automatically filter unhealthy nodes during load balancing to ensure system stability. [#249](https://github.com/apache/incubator-apisix/pull/249)
- Anti-ReDoS(Regular expression Denial of Service). [#252](https://github.com/apache/incubator-apisix/pull/250)
- :sunrise: **[OpenTracing](https://github.com/apache/incubator-apisix/blob/master/doc/plugins/zipkin.md)**: support Zipkin and Apache SkyWalking. [#304](https://github.com/apache/incubator-apisix/pull/304)
