This can be very useful for setting up **resources** that you need to use for the whole app, and that are **shared** among requests, and/or that you need to **clean up** afterwards. For example, a database connection pool, or loading a shared machine learning model.

## Use Case

Let's start with an example **use case** and then see how to solve it with this.

import okhttp3.internal.commonProtocol
import okhttp3.internal.commonRemoveHeader
import okhttp3.internal.commonRequest
import okhttp3.internal.commonToString
import okhttp3.internal.commonTrailers
import okhttp3.internal.connection.Exchange
import okhttp3.internal.http.parseChallenges
import okio.Buffer

/**
 * An HTTP response. Instances of this class are not immutable: the response body is a one-shot

      <name>Apache License, Version 2.0</name>
      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
      <distribution>repo</distribution>
    </license>
  </licenses>
  <scm>
    <connection>scm:git:https://github.com/google/guava.git</connection>
    <developerConnection>scm:git:******@****.***:google/guava.git</developerConnection>
    <url>https://github.com/google/guava</url>
  </scm>
  <developers>
    <developer>

      <name>Apache License, Version 2.0</name>
      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
      <distribution>repo</distribution>
    </license>
  </licenses>
  <scm>
    <connection>scm:git:https://github.com/google/guava.git</connection>
    <developerConnection>scm:git:******@****.***:google/guava.git</developerConnection>
    <url>https://github.com/google/guava</url>
  </scm>
  <developers>
    <developer>

/// tip

Additionally, a background task is normally an independent set of logic that should be handled separately, with its own resources (e.g. its own database connection).

So, this way you will probably have cleaner code.

///

 *    from the peer.
 *
 * Web sockets may fail due to HTTP upgrade problems, connectivity problems, or if either peer
 * chooses to short-circuit the graceful shutdown process:
 *
 *  * **Canceled:** the web socket connection failed. Messages that were successfully enqueued by
 *    either peer may not have been transmitted to the other.
 *
 * Note that the state progression is independent for each peer. Arriving at a gracefully-closed

            url.set("https://www.apache.org/licenses/LICENSE-2.0.txt")
            distribution.set("repo")
          }
        }
        scm {
          connection.set("scm:git:https://github.com/square/okhttp.git")
          developerConnection.set("scm:git:ssh://******@****.***/square/okhttp.git")
          url.set("https://github.com/square/okhttp")
        }
        developers {

          "legendFormat": "{{ source_workload }}.{{ source_workload_namespace}}",
          "refId": "B",
          "step": 2
        }
      ],
      "title": "Bytes Received from Incoming TCP Connection",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "fieldConfig": {
        "defaults": {

     * operator <code>|</code>. See the examples listed above.
     * 
     * @param url
     * @param pipeType
     * @param unshared
     *            whether to use an exclusive connection for this pipe
     * @param tc
     * @throws MalformedURLException
     */

    public SmbNamedPipe ( String url, int pipeType, boolean unshared, CIFSContext tc ) throws MalformedURLException {

    /**
     * @return resolved server address
     * @throws CIFSException
     */
    Address getAddress () throws CIFSException;


    /**
     * @return whether this is a IPC connection
     */
    boolean isIPC ();


    /**
     * Returns type of of object this <tt>SmbFile</tt> represents.
     * 
     * @return <tt>TYPE_FILESYSTEM, TYPE_WORKGROUP, TYPE_SERVER,