*/
public enum LoadBalancingStrategy {
    /**
     * Round-robin selection through available channels
     */
    ROUND_ROBIN,

    /**
     * Select the least busy channel based on pending operations
     */
    LEAST_LOADED,

    /**
     * Weighted random selection based on channel scores
     */
    WEIGHTED_RANDOM,

    /**
     * Affinity-based selection for related operations

/**
 * An entry in a reference map.
 *
 * <p>Entries in the map can be in the following states:
 *
 * <p>Valid:
 *
 * <ul>
 *   <li>Live: valid key/value are set
 *   <li>Loading: loading is pending
 * </ul>
 *
 * <p>Invalid:
 *
 * <ul>
 *   <li>Expired: time expired (key/value may still be set)
 *   <li>Collected: key/value was partially collected, but not yet cleaned up

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<AccessToken> selectPage(CBCall<AccessTokenCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<AccessToken>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<AccessTokenCB> cbLambda, EntityRowHandler<AccessToken> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<ElevateWordToLabel> selectPage(CBCall<ElevateWordToLabelCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<ElevateWordToLabel>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<ElevateWordToLabelCB> cbLambda, EntityRowHandler<ElevateWordToLabel> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<KeyMatch> selectPage(CBCall<KeyMatchCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<KeyMatch>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<KeyMatchCB> cbLambda, EntityRowHandler<KeyMatch> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<RelatedContent> selectPage(CBCall<RelatedContentCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<RelatedContent>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<RelatedContentCB> cbLambda, EntityRowHandler<RelatedContent> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<RelatedQuery> selectPage(CBCall<RelatedQueryCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<RelatedQuery>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<RelatedQueryCB> cbLambda, EntityRowHandler<RelatedQuery> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<FavoriteLog> selectPage(CBCall<FavoriteLogCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<FavoriteLog>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<FavoriteLogCB> cbLambda, EntityRowHandler<FavoriteLog> entityLambda) {

    public ListResultBean<Group> selectList(CBCall<GroupCB> cbLambda) {
        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<Group> selectPage(CBCall<GroupCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<Group>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<GroupCB> cbLambda, EntityRowHandler<Group> entityLambda) {

   *
   * <p>Among the improvements that this method and {@code LoadingCache.get(K)} both provide are:
   *
   * <ul>
   *   <li>{@linkplain LoadingCache#get(Object) awaiting the result of a pending load} rather than
   *       starting a redundant one
   *   <li>eliminating the error-prone caching boilerplate
   *   <li>tracking load {@linkplain #stats statistics}
   * </ul>
   *