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Performance optimizations #480

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hansegucker merged 29 commits from feature/performance-optimizations into master 2020-10-27 17:09:28 +01:00
Conversation 55 Commits 29 Files changed 9 +334 -205
hansegucker commented 2020-09-07 14:28:07 +02:00 (Migrated from edugit.org)
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Close #107

Close #107
hansegucker commented 2020-09-07 14:28:07 +02:00 (Migrated from edugit.org)
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changed milestone to %2

changed milestone to %2
hansegucker commented 2020-09-07 14:28:36 +02:00 (Migrated from edugit.org)
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changed the description

changed the description
hansegucker commented 2020-09-07 15:22:22 +02:00 (Migrated from edugit.org)
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added 5 commits

  • 6c29d76d...a7727a68 - 2 commits from branch master
  • e9282bc9 - Merge branch 'master' into 73-add-rules-and-permissions
  • 45330d48 - Simplify queryset in RegisterAbsenceForm
  • 78772300 - Merge branch '73-add-rules-and-permissions' into feature/performance-optimizations

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added 5 commits <ul><li>6c29d76d...a7727a68 - 2 commits from branch <code>master</code></li><li>e9282bc9 - Merge branch &#39;master&#39; into 73-add-rules-and-permissions</li><li>45330d48 - Simplify queryset in RegisterAbsenceForm</li><li>78772300 - Merge branch &#39;73-add-rules-and-permissions&#39; into feature/performance-optimizations</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3250&start_sha=6c29d76d737bae7a58706c034077d482bc16ff3b)
hansegucker commented 2020-09-09 13:09:53 +02:00 (Migrated from edugit.org)
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added 1 commit

  • ea8239e3 - Reorder permission rules in order to make them more efficient

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added 1 commit <ul><li>ea8239e3 - Reorder permission rules in order to make them more efficient</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3276&start_sha=78772300a267402f7022e581d9654a5fe9d020aa)
hansegucker commented 2020-09-09 13:32:11 +02:00 (Migrated from edugit.org)
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added 1 commit

  • f56f70a5 - Optimize has_person_group_object_perm

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added 1 commit <ul><li>f56f70a5 - Optimize has_person_group_object_perm</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3277&start_sha=ea8239e315f8b2b09bcd6bdc09cc4dd2ad51690e)
hansegucker commented 2020-09-09 14:26:36 +02:00 (Migrated from edugit.org)
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marked as a Work In Progress

marked as a **Work In Progress**
yuha commented 2020-09-09 15:14:49 +02:00 (Migrated from edugit.org)
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added 1 commit

  • f0cb7404 - Optimize performance of predicates with custom permission queries

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added 1 commit <ul><li>f0cb7404 - Optimize performance of predicates with custom permission queries</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3282&start_sha=f56f70a58bb2a227266473e1b883651e23920e69)
yuha commented 2020-09-09 15:24:57 +02:00 (Migrated from edugit.org)
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added 1 commit

  • 32ef21a6 - Optimize performance of predicates with custom permission queries

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added 1 commit <ul><li>32ef21a6 - Optimize performance of predicates with custom permission queries</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3283&start_sha=f0cb7404a5cb2551230e40554b30785d7f3d1dda)
hansegucker commented 2020-09-09 17:29:32 +02:00 (Migrated from edugit.org)
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added 1 commit

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added 1 commit <ul><li>24ef1e73 - Simplify queries</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3285&start_sha=32ef21a64f1f7b96a6516f9881ceb7f68940fc76)
hansegucker commented 2020-09-09 17:40:18 +02:00 (Migrated from edugit.org)
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added 1 commit

  • 50459916 - Rewrite some rules more efficient

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added 1 commit <ul><li>50459916 - Rewrite some rules more efficient</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3286&start_sha=24ef1e73dce1e0679bed3cf1411f1562c438c566)
hansegucker commented 2020-09-09 17:45:11 +02:00 (Migrated from edugit.org)
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added 1 commit

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added 1 commit <ul><li>940687dc - Convert queries to lists</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3287&start_sha=50459916cd489e0dfb6c3bd2577a02c168e470d0)
hansegucker commented 2020-09-10 13:37:41 +02:00 (Migrated from edugit.org)
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added 1 commit

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added 1 commit <ul><li>cbe2050b - Optimize model extensions</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3293&start_sha=940687dc9f53ba2f1e88e229acccb75ec0082c22)
hansegucker commented 2020-09-10 17:35:47 +02:00 (Migrated from edugit.org)
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added 3 commits

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added 3 commits <ul><li>eb2f42e7 - Prefetch form select data</li><li>707cf04f - Use get_content_type_by_perm in predicates</li><li>3b8503d8 - Reformat</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3294&start_sha=cbe2050b3c28231fae67340766ab244c317c14e0)
hansegucker commented 2020-09-10 17:44:18 +02:00 (Migrated from edugit.org)
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added 1 commit

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added 1 commit <ul><li>b62a14d2 - Remove wrong set prefetch</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3295&start_sha=3b8503d8411fd56ed41e783195025dbf47ba58be)
hansegucker commented 2020-09-10 18:23:05 +02:00 (Migrated from edugit.org)
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added 1 commit

  • 66071535 - Filter prefetched personal notes

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added 1 commit <ul><li>66071535 - Filter prefetched personal notes</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3296&start_sha=b62a14d219bf3af7086fde0dc0c176fc283d7994)
hansegucker commented 2020-09-10 18:32:56 +02:00 (Migrated from edugit.org)
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added 2 commits

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added 2 commits <ul><li>e7b8690c - Simplify some queries</li><li>abbd2ccd - Add prefetch option in week view</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3297&start_sha=66071535d0edc369137f0355c469afbc895ba86b)
hansegucker commented 2020-09-11 11:22:12 +02:00 (Migrated from edugit.org)
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added 6 commits

  • abbd2ccd...5833dfa2 - 3 commits from branch master
  • 120193ca - Merge branch 'master' into 73-add-rules-and-permissions
  • cff25c97 - Add permissions for "My groups"
  • 50629966 - Merge branch '73-add-rules-and-permissions' into feature/performance-optimizations

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added 6 commits <ul><li>abbd2ccd...5833dfa2 - 3 commits from branch <code>master</code></li><li>120193ca - Merge branch &#39;master&#39; into 73-add-rules-and-permissions</li><li>cff25c97 - Add permissions for &quot;My groups&quot;</li><li>50629966 - Merge branch &#39;73-add-rules-and-permissions&#39; into feature/performance-optimizations</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3300&start_sha=abbd2ccd8441c89569f0b91d4b2b2f638d37e781)
hansegucker commented 2020-09-11 11:24:22 +02:00 (Migrated from edugit.org)
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added 2 commits

  • 34ef43d1 - Add menu validator for "My groups"
  • 6e333849 - Merge branch '73-add-rules-and-permissions' into feature/performance-optimizations

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added 2 commits <ul><li>34ef43d1 - Add menu validator for &quot;My groups&quot;</li><li>6e333849 - Merge branch &#39;73-add-rules-and-permissions&#39; into feature/performance-optimizations</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3302&start_sha=50629966c2e007dbc6b8651caca17c06d25e6cf7)
hansegucker commented 2020-09-27 15:24:10 +02:00 (Migrated from edugit.org)
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added 6 commits

  • 6e333849...dad563e6 - 4 commits from branch master
  • ed1fede6 - Merge branch 'master' into 73-add-rules-and-permissions
  • 82107ae6 - Merge branch '73-add-rules-and-permissions' into feature/performance-optimizations

Compare with previous version

added 6 commits <ul><li>6e333849...dad563e6 - 4 commits from branch <code>master</code></li><li>ed1fede6 - Merge branch &#39;master&#39; into 73-add-rules-and-permissions</li><li>82107ae6 - Merge branch &#39;73-add-rules-and-permissions&#39; into feature/performance-optimizations</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3403&start_sha=6e333849266560403f0852e8ebfe3a2c134efe52)
hansegucker commented 2020-10-15 17:52:47 +02:00 (Migrated from edugit.org)
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added 3 commits

  • ee72ebc2 - Fix problems with update_or_create and prefetching
  • 091caa94 - Merge branch 'fix/update-or-create' into 73-add-rules-and-permissions
  • 9d51bbfb - Merge branch '73-add-rules-and-permissions' into feature/performance-optimizations

Compare with previous version

added 3 commits <ul><li>ee72ebc2 - Fix problems with update_or_create and prefetching</li><li>091caa94 - Merge branch &#39;fix/update-or-create&#39; into 73-add-rules-and-permissions</li><li>9d51bbfb - Merge branch &#39;73-add-rules-and-permissions&#39; into feature/performance-optimizations</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3501&start_sha=82107ae6322c4b2d6be458b6145e11fb3bea8db4)
hansegucker commented 2020-10-15 17:58:22 +02:00 (Migrated from edugit.org)
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added 1 commit

  • 56806b7f - Use classproperty from functional

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added 1 commit <ul><li>56806b7f - Use classproperty from functional</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3502&start_sha=9d51bbfb0344740e36a76224cafa6c3916c51a67)
hansegucker commented 2020-10-25 12:22:46 +01:00 (Migrated from edugit.org)
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added 12 commits

  • 56806b7f...50db5254 - 11 commits from branch master
  • c32c3d04 - Merge branch 'master' into feature/performance-optimizations

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added 12 commits <ul><li>56806b7f...50db5254 - 11 commits from branch <code>master</code></li><li>c32c3d04 - Merge branch &#39;master&#39; into feature/performance-optimizations</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3529&start_sha=56806b7fb1983f286ef9c321c041e6d1a1d11b9d)
hansegucker commented 2020-10-25 12:23:02 +01:00 (Migrated from edugit.org)
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changed the description

changed the description
hansegucker commented 2020-10-25 12:23:45 +01:00 (Migrated from edugit.org)
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Please review, @nik!

Please review, @nik!
hansegucker commented 2020-10-25 12:23:45 +01:00 (Migrated from edugit.org)
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unmarked as a Work In Progress

unmarked as a **Work In Progress**
nik commented 2020-10-25 17:19:52 +01:00 (Migrated from edugit.org)
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The last comma here reads like a syntax error.

The last comma here reads like a syntax error.
nik commented 2020-10-25 17:19:54 +01:00 (Migrated from edugit.org)
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Help on built-in function all in module builtins:

all(iterable, /)
    Return True if bool(x) is True for all values x in the iterable.
    
    If the iterable is empty, return True.

Also, what is this good for?

``` Help on built-in function all in module builtins: all(iterable, /) Return True if bool(x) is True for all values x in the iterable. If the iterable is empty, return True. ``` Also, what is this good for?
nik commented 2020-10-25 17:19:55 +01:00 (Migrated from edugit.org)
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Are you sure using a loop will improve performance?

Are you sure using a loop will improve performance?
hansegucker commented 2020-10-25 17:29:46 +01:00 (Migrated from edugit.org)
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But it isn't a syntax error and it's formatted in this way by black.

But it isn't a syntax error and it's formatted in this way by black.
hansegucker commented 2020-10-25 17:36:36 +01:00 (Migrated from edugit.org)
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Ok, I will rename it. It should centralize access on these common-used models with a low count of entries, so that the results can be cached.

Ok, I will rename it. It should centralize access on these common-used models with a low count of entries, so that the results can be cached.
hansegucker commented 2020-10-25 17:36:37 +01:00 (Migrated from edugit.org)
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It definitely reduces database queries, because the values used by the loop are prefetched. The reduced count of database queries beats the time a Python loop needs.

It definitely reduces database queries, because the values used by the loop are prefetched. The reduced count of database queries beats the time a Python loop needs.
nik commented 2020-10-25 18:07:28 +01:00 (Migrated from edugit.org)
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I do not see how this reduces database queries.

I do not see how this reduces database queries.
nik commented 2020-10-25 18:12:47 +01:00 (Migrated from edugit.org)
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Have you researched what others do to cache querysets?

Have you researched what others do to cache querysets?
nik commented 2020-10-25 18:15:11 +01:00 (Migrated from edugit.org)
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We might want https://github.com/noripyt/django-cachalot

We might want https://github.com/noripyt/django-cachalot
hansegucker commented 2020-10-25 18:35:05 +01:00 (Migrated from edugit.org)
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Filter doesn't make use of prefetched values in related querysets, all does.

`Filter` doesn't make use of prefetched values in related querysets, `all` does.
hansegucker commented 2020-10-25 18:35:06 +01:00 (Migrated from edugit.org)
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Yes, but it's always a decision between a) we cache everything or b) we cache nothing. So that change here should be seen only as a workaround.

Yes, but it's always a decision between a) we cache everything or b) we cache nothing. So that change here should be seen only as a workaround.
hansegucker commented 2020-10-25 18:35:21 +01:00 (Migrated from edugit.org)
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Yes, but then in core.

Yes, but then in core.
hansegucker commented 2020-10-25 18:35:44 +01:00 (Migrated from edugit.org)
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created #116 to continue this discussion

created #116 to continue this discussion
hansegucker commented 2020-10-25 18:35:44 +01:00 (Migrated from edugit.org)
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mentioned in issue #116

mentioned in issue #116
hansegucker commented 2020-10-26 19:34:34 +01:00 (Migrated from edugit.org)
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added 29 commits

  • c32c3d04...8e855851 - 28 commits from branch master
  • 4e460d55 - Merge branch 'master' into feature/performance-optimizations

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added 29 commits <ul><li>c32c3d04...8e855851 - 28 commits from branch <code>master</code></li><li>4e460d55 - Merge branch &#39;master&#39; into feature/performance-optimizations</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3532&start_sha=c32c3d042d4e9d1050fd22883dc7f02326649c8d)
nik commented 2020-10-27 16:29:46 +01:00 (Migrated from edugit.org)
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Decided to use cachalot and "cache everything", so please remove all these workaround propertes from this MR.

Decided to use cachalot and "cache everything", so please remove all these workaround propertes from this MR.
nik commented 2020-10-27 16:50:28 +01:00 (Migrated from edugit.org)
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Please remove in favour of cachalot.

Please remove in favour of cachalot.
nik commented 2020-10-27 16:50:29 +01:00 (Migrated from edugit.org)
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Please use a filter() for readability (and to account for any improvements on the RelatedManager filter API in spe).

Please use a `filter()` for readability (and to account for any improvements on the `RelatedManager` filter API in spe).
nik commented 2020-10-27 16:50:29 +01:00 (Migrated from edugit.org)
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Please remove in favour of cachalot.

Please remove in favour of cachalot.
nik commented 2020-10-27 16:50:30 +01:00 (Migrated from edugit.org)
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Please remove in favour of cachalot.

Please remove in favour of cachalot.
nik commented 2020-10-27 16:50:31 +01:00 (Migrated from edugit.org)
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Please us a filter(), as discussed above.

Please us a `filter()`, as discussed above.
hansegucker commented 2020-10-27 17:05:02 +01:00 (Migrated from edugit.org)
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resolved all threads

resolved all threads
hansegucker commented 2020-10-27 17:05:10 +01:00 (Migrated from edugit.org)
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resolved all threads

resolved all threads
hansegucker commented 2020-10-27 17:06:22 +01:00 (Migrated from edugit.org)
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changed this line in version 23 of the diff

changed this line in [version 23 of the diff](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3535&start_sha=4e460d55b9fa6d1fab9eee8fc0594209e8904891#780f294f550e4cd96aa99e7069b309c8b842f1d2_41_39)
hansegucker commented 2020-10-27 17:06:24 +01:00 (Migrated from edugit.org)
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changed this line in version 23 of the diff

changed this line in [version 23 of the diff](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3535&start_sha=4e460d55b9fa6d1fab9eee8fc0594209e8904891#bd8664958a1ee12dd2af439715dcc93cbd19732d_53_49)
hansegucker commented 2020-10-27 17:06:24 +01:00 (Migrated from edugit.org)
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changed this line in version 23 of the diff

changed this line in [version 23 of the diff](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3535&start_sha=4e460d55b9fa6d1fab9eee8fc0594209e8904891#70ecb348d7a796878a62bf6188416dcc55b207e6_182_180)
hansegucker commented 2020-10-27 17:06:24 +01:00 (Migrated from edugit.org)
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changed this line in version 23 of the diff

changed this line in [version 23 of the diff](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3535&start_sha=4e460d55b9fa6d1fab9eee8fc0594209e8904891#70ecb348d7a796878a62bf6188416dcc55b207e6_248_252)
hansegucker commented 2020-10-27 17:06:25 +01:00 (Migrated from edugit.org)
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changed this line in version 23 of the diff

changed this line in [version 23 of the diff](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3535&start_sha=4e460d55b9fa6d1fab9eee8fc0594209e8904891#780f294f550e4cd96aa99e7069b309c8b842f1d2_222_212)
hansegucker commented 2020-10-27 17:06:26 +01:00 (Migrated from edugit.org)
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added 3 commits

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added 3 commits <ul><li>8e6c9320 - Remove legacy caching methods</li><li>29b5aa3a - Use filter in favour of for loops</li><li>7d767261 - Reformat</li></ul> [Compare with previous version](/AlekSIS/official/AlekSIS-App-Alsijil/-/merge_requests/90/diffs?diff_id=3535&start_sha=4e460d55b9fa6d1fab9eee8fc0594209e8904891)
nik commented 2020-10-27 17:09:27 +01:00 (Migrated from edugit.org)
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mentioned in commit 1ed6789523

mentioned in commit 1ed6789523053e6d2089ee4a2b7bddb67b014c71
nik (Migrated from edugit.org) merged commit 1ed6789523 into master 2020-10-27 17:09:28 +01:00
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No due date set.

Dependencies

No dependencies set.

Reference
aleksis/AlekSIS-App-Alsijil!480
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