throw an exception if duplicated subscriber id exists

[DavidBadura]

No description provided.

[github-actions]

Hello 👋

here is the most recent benchmark result:

SplitStreamBench
================

+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                         | time (kde mode)                                     | memory                                     |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                 | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad10000Events () | 4.802ms (±0.00%)   | 6.663ms (±0.00%)   | -27.94%   | 37.572mb        | 37.578mb   | -0.02%      |
| benchSave10000Events () | 339.044ms (±0.00%) | 363.710ms (±0.00%) | -6.78%    | 37.070mb        | 37.579mb   | -1.35%      |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SimpleSetupBench
================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 940.500μs (±0.00%) | 945.900μs (±0.00%) | -0.57%    | 33.762mb        | 33.762mb   | 0.00%       |
| benchLoad10000Events ()                | 52.185ms (±0.00%)  | 49.853ms (±0.00%)  | +4.68%    | 33.762mb        | 33.762mb   | 0.00%       |
| benchSave1Event ()                     | 1.092ms (±0.00%)   | 1.256ms (±0.00%)   | -13.03%   | 33.762mb        | 33.762mb   | 0.00%       |
| benchSave10000Events ()                | 213.518ms (±0.00%) | 220.037ms (±0.00%) | -2.96%    | 33.764mb        | 33.764mb   | 0.00%       |
| benchSave10000Aggregates ()            | 9.550s (±0.00%)    | 9.075s (±0.00%)    | +5.23%    | 33.763mb        | 33.763mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 6.860s (±0.00%)    | 6.850s (±0.00%)    | +0.15%    | 33.763mb        | 33.763mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SnapshotsBench
==============

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad10000EventsMissingSnapshot () | 51.300ms (±0.00%)  | 50.369ms (±0.00%)  | +1.85%    | 33.763mb        | 33.763mb   | 0.00%       |
| benchLoad10000Events ()                | 884.200μs (±0.00%) | 901.100μs (±0.00%) | -1.88%    | 33.763mb        | 33.763mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

PersonalDataBench
=================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 869.400μs (±0.00%) | 861.400μs (±0.00%) | +0.93%    | 34.892mb        | 34.892mb   | 0.00%       |
| benchLoad10000Events ()                | 81.470ms (±0.00%)  | 84.401ms (±0.00%)  | -3.47%    | 34.892mb        | 34.892mb   | 0.00%       |
| benchSave1Event ()                     | 1.559ms (±0.00%)   | 1.526ms (±0.00%)   | +2.10%    | 34.892mb        | 34.892mb   | 0.00%       |
| benchSave10000Events ()                | 244.034ms (±0.00%) | 244.152ms (±0.00%) | -0.05%    | 34.894mb        | 34.894mb   | 0.00%       |
| benchSave10000Aggregates ()            | 13.889s (±0.00%)   | 13.679s (±0.00%)   | +1.54%    | 34.892mb        | 34.892mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 10.857s (±0.00%)   | 10.844s (±0.00%)   | +0.13%    | 35.394mb        | 35.394mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SubscriptionEngineBench
=======================

+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                               | memory                                     |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>  | Tag: base       | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 3.068s (±0.00%) | 3.060s (±0.00%) | +0.26%    | 34.162mb        | 34.162mb   | 0.00%       |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+

This comment gets update everytime a new commit comes in!