# Uses of Package
io.vertx.core.spi

- Packages that use io.vertx.core.spi
  Package | Description
  --- | ---
  io.vertx.core |
  io.vertx.core.buffer |
  io.vertx.core.http |
  io.vertx.core.metrics |
  io.vertx.core.streams |
  io.vertx.ext.httpservicefactory |
  io.vertx.lang.groovy |
  io.vertx.lang.ruby |
  io.vertx.maven |
  io.vertx.service |

- Classes in io.vertx.core.spi used by io.vertx.core
  Class and Description
  FutureFactory
  VerticleFactory Has responsibility for creating verticle instances.
  VertxFactory Factory for creating Vertx instances.

- Classes in io.vertx.core.spi used by io.vertx.core.buffer
  Class and Description
  BufferFactory

- Classes in io.vertx.core.spi used by io.vertx.core.http
  Class and Description
  WebSocketFrameFactory

- Classes in io.vertx.core.spi used by io.vertx.core.metrics
  Class and Description
  VertxMetricsFactory A factory for the plugable metrics SPI.

- Classes in io.vertx.core.spi used by io.vertx.core.streams
  Class and Description
  PumpFactory

- Classes in io.vertx.core.spi used by io.vertx.ext.httpservicefactory
  Class and Description
  VerticleFactory Has responsibility for creating verticle instances.

- Classes in io.vertx.core.spi used by io.vertx.lang.groovy
  Class and Description
  VerticleFactory Has responsibility for creating verticle instances.

- Classes in io.vertx.core.spi used by io.vertx.lang.ruby
  Class and Description
  VerticleFactory Has responsibility for creating verticle instances.

- Classes in io.vertx.core.spi used by io.vertx.maven
  Class and Description
  VerticleFactory Has responsibility for creating verticle instances.

- Classes in io.vertx.core.spi used by io.vertx.service
  Class and Description
  VerticleFactory Has responsibility for creating verticle instances.

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