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annotate TODO @ 485:9722e408d817 OrthancPostgreSQL-6.0

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closing OrthancPostgreSQL-6.0
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 22 Mar 2024 13:34:19 +0100
parents cec6a0cd399f
children f4244c7e2725 15e609c439d1
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2 ==============================
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3 == Orthanc database plugins ==
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4 ==============================
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6 -----------------------
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7 Common - Database index
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8 -----------------------
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10 * Performance of joins in LookupResources: Create cached statement for
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11 LookupResources, that are grouped to search up to, say, 10 tags,
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12 instead of recompiling for each request
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14 ---------------------
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15 Common - Storage area
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16 ---------------------
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18 * Implement the "StoreDicom" option from the default filesystem
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19 storage area to run MySQL/PostgreSQL storage in index-only mode:
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d700c8f9fc24 migration to UCLouvain servers
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20 https://orthanc.uclouvain.be/book/contributing.html
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22 * Performance: Add a pool of connections to PostgreSQL/MySQL, as
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23 already done in the database index plugins
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24
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25 ----------
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26 PostgreSQL
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27 ----------
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28
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29 * reported issue to validate: uploading lots of files through HTTP with:
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30 - 1 client and IndexConnectionsCount==1 took 100s
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31 - 2 client and IndexConnectionsCount==2 took 600s (lots of transaction replayed)
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33 * Seems Orthanc might deadlock when there are plenty of conflicting transactions:
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34 https://groups.google.com/g/orthanc-users/c/xQelEcKqL9U/m/HsvxwlkvAQAJ
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35 https://groups.google.com/g/orthanc-users/c/1bkClfZ0KBA/m/s4AlwVh3CQAJ
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37 -----
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38 MySQL
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39 -----
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cc7af42d4f23 Store revisions for metadata and attachments in PostgreSQL
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41 * Store revisions for metadata and attachments in MySQL (this is
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42 already implemented in PostgreSQL)
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44 * MySQL performance => implement GlobalProperty_GetTotalSizeIsFast:
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45 https://groups.google.com/d/msg/orthanc-users/kSR4a110zDo/D7e4ITR8BwAJ
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47 * Add index to speed up wildcard search, as already done in PostgreSQL:
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49 - https://dev.mysql.com/doc/refman/5.5/en/fulltext-search.html +
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50 ALTER TABLE table ADD FULLTEXT index_name(column1);
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51
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52 - https://dev.mysql.com/doc/refman/8.0/en/index-btree-hash.html