* Share database connections.
* Enforce security, authentication, role requirements, etc.
* And many other things...

All these, while minimizing code repetition.

## First Steps { #first-steps }

Let's see a very simple example. It will be so simple that it is not very useful, for now.

But this way we can focus on how the **Dependency Injection** system works.

                supportTestRetry = (performanceTestBuildSpec.type != PerformanceTestType.FLAKINESS_DETECTION)
            }
            if (testProjects.isNotEmpty()) {
                steps {
                    preBuildSteps()
                    killProcessStep(buildTypeThis, KILL_ALL_GRADLE_PROCESSES, os)
                    substDirOnWindows(os)

            param("env.PERFORMANCE_DB_PASSWORD_TCAGENT", "%performance.db.password.tcagent%")
            param("additional.gradle.parameters", "")
        }

        val buildTypeThis = this
        steps {
            killProcessStep(buildTypeThis, KILL_ALL_GRADLE_PROCESSES, os)
            substDirOnWindows(os)
            gradleWrapper {
                name = "GRADLE_RUNNER"

// Since this class only needs CAS on one field, we can avoid this bug by extending AtomicReference
// instead of using an AtomicReferenceFieldUpdater. This reference stores Thread instances
// and DONE/INTERRUPTED - they have a common ancestor of Runnable.
abstract class InterruptibleTask<T extends @Nullable Object>
    extends AtomicReference<@Nullable Runnable> implements Runnable {
  static {

     */
    public OptionalEntity<CharMappingItem> getCharMappingItem(final String dictId, final long id) {
        return getCharMappingFile(dictId).map(file -> file.get(id).get());
    }

    /**
     * Stores a character mapping item in the specified dictionary.
     * <p>
     * This method performs either an insert operation (for new items with ID 0)
     * or an update operation (for existing items with non-zero ID) depending on

     * @return an optional entity containing the job log if found
     */
    public OptionalEntity<JobLog> getJobLog(final String id) {
        return jobLogBhv.selectByPK(id);
    }

    /**
     * Stores a job log entry in the database.
     * Performs an insert or update operation based on whether the job log already exists.
     *
     * @param jobLog the job log to store
     */

am/configure-openid-external-identity-management.html for a tutorial on using these variables. oidc: enabled: false configUrl: "https://identity-provider-url/.well-known/openid-configuration" clientId: "minio" clientSecret: "" claimName: "policy" scopes: "openid,profile,email" redirectUri: "https://console-endpoint-url/oauth_callback" # Can leave empty claimPrefix: "" comment: "" networkPolicy: enabled: false allowExternal: true ## PodDisruptionBudget settings ## ref: https://kubernetes.io/docs/...

am/configure-openid-external-identity-management.html for a tutorial on using these variables. oidc: enabled: false configUrl: "https://identity-provider-url/.well-known/openid-configuration" clientId: "minio" clientSecret: "" claimName: "policy" scopes: "openid,profile,email" redirectUri: "https://console-endpoint-url/oauth_callback" # Can leave empty claimPrefix: "" comment: "" networkPolicy: enabled: false allowExternal: true ## PodDisruptionBudget settings ## ref: https://kubernetes.io/docs/...

am/configure-openid-external-identity-management.html for a tutorial on using these variables. oidc: enabled: false configUrl: "https://identity-provider-url/.well-known/openid-configuration" clientId: "minio" clientSecret: "" claimName: "policy" scopes: "openid,profile,email" redirectUri: "https://console-endpoint-url/oauth_callback" # Can leave empty claimPrefix: "" comment: "" networkPolicy: enabled: false allowExternal: true ## PodDisruptionBudget settings ## ref: https://kubernetes.io/docs/...

d-configuration" clientId: "minio" clientSecret: "" # Provide existing client secret from the Kubernetes Secret resource, existing secret will have priority over `clientSecret` existingClientSecret: "" existingClientSecret: "" claimName: "policy" scopes: "openid,profile,email" redirectUri: "https://console-endpoint-url/oauth_callback" # Can leave empty claimPrefix: "" comment: "" networkPolicy: enabled: false allowExternal: true ## PodDisruptionBudget settings ## ref: https://kubernetes.io/docs/...