<div dir="ltr">Hi Hilaire,<div> have you tried doing a lazy loading? Do you need to load all the documents at once? </div><div> You could use proxies for the persistent objects you want to load lazily and only read the object from disk when needed, as ORM do when persisting in relational databases.</div><div><br></div><div> I hope this helps.</div><div> Hernan.</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Sep 21, 2026 at 6:57 AM Luciano Notarfrancesco via Cuis-dev <<a href="mailto:cuis-dev@lists.cuis.st">cuis-dev@lists.cuis.st</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Image segments can be useful for superfast save/load of a graph of objects. I dont know how they compare with the serialization you are doing, it might be worth doing some tests to compare.</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, 20 Sep 2026 at 17:53 Hilaire Fernandes via Cuis-dev <<a href="mailto:cuis-dev@lists.cuis.st" target="_blank">cuis-dev@lists.cuis.st</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u> <div bgcolor="#FFFFFF"> <p><font size="4" style="color:rgb(0,0,0)">Hi, </font></p> <p><font size="4" style="color:rgb(0,0,0)">I am looking for idea and design idea regarding persistence of objects.</font></p> <p><font size="4" style="color:rgb(0,0,0)">In the DyboApp, the user data are saved in a tree of objects</font></p> <ul> <li><font size="4" style="color:rgb(0,0,0)">userData (root)</font></li> <ul> <li><font size="4" style="color:rgb(0,0,0)">schools</font></li> <ul> <li><font size="4" style="color:rgb(0,0,0)">classGroups</font></li> <ul> <li><font size="4" style="color:rgb(0,0,0)">courses</font></li> <ul> <li><font size="4" style="color:rgb(0,0,0)">topics</font></li> <ul> <li><font size="4" style="color:rgb(0,0,0)">documents</font></li> </ul> </ul> </ul> </ul> </ul> </ul> <p><font size="4" style="color:rgb(0,0,0)">The most complex data are the documents. A document represents a metaphor of pages with handwritten notes, and an arbitrary number of tools, dropped pictures from the host filer, etc. Moreover a page may have a model as simple as a background color, or a particular design as horizontal lines, grid, graph paper or a pdf.</font></p> <p><font size="4" style="color:rgb(0,0,0)">Because of this complexity, I serialize the documents in individual compressed files, it is fast at saving and loading. Because serializing the userData root save all the data by default, each Document instances in the documents collection (at the bottom of the tree above), are in fact DiskProxy containing the path to the independently serialized Document instances.</font></p> <p><font size="4" style="color:rgb(0,0,0)">This works well when saving the whole userData or an individual Document. However, at start-up, accessing the userData load everything, which is fine expect for the documents collection and its Documents instances (through the Disk proxy). As the documents collection, it may become slow when I will have several hundreds of documents.</font></p> <p><font size="4" style="color:rgb(0,0,0)">I have some ideas how to improve this, but I am interested to read other opinions and experience on the matter.</font></p> <p><font size="4" style="color:rgb(0,0,0)">Thanks</font></p> <p><font size="4" style="color:rgb(0,0,0)"><br> </font></p> <pre cols="72" style="font-family:monospace">-- <a href="http://mamot.fr/@drgeo" style="font-family:monospace" target="_blank">http://mamot.fr/@drgeo</a></pre> </div> -- <br> Cuis-dev mailing list<br> <a href="mailto:Cuis-dev@lists.cuis.st" target="_blank">Cuis-dev@lists.cuis.st</a><br> <a href="https://lists.cuis.st/mailman/listinfo/cuis-dev" rel="noreferrer" target="_blank">https://lists.cuis.st/mailman/listinfo/cuis-dev</a><br> </blockquote></div></div> -- <br> Cuis-dev mailing list<br> <a href="mailto:Cuis-dev@lists.cuis.st" target="_blank">Cuis-dev@lists.cuis.st</a><br> <a href="https://lists.cuis.st/mailman/listinfo/cuis-dev" rel="noreferrer" target="_blank">https://lists.cuis.st/mailman/listinfo/cuis-dev</a><br> </blockquote></div><div><br clear="all"></div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div style="font-size:small"><div dir="ltr"><div dir="ltr"><div style="font-size:12.8px"><span style="font-family:tahoma,sans-serif;font-size:xx-small;border-collapse:collapse"><strong><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal"><span style="font-weight:bold">Hernán Wilkinson</span><br>Agile Software Development, Teaching & Coaching</span></font></span></span></strong></span></div><div style="font-size:12.8px"><span style="font-family:tahoma,sans-serif;font-size:xx-small;border-collapse:collapse"><strong><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal">Phone: +54-011</span></font></span></span></strong></span><font face="tahoma, sans-serif" size="2">-4893-2057</font></div><div style="font-size:12.8px"><strong style="font-family:tahoma,sans-serif;font-size:xx-small"><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal">Twitter: @HernanWilkinson</span></font></span></span></strong></div><div style="font-size:12.8px"><span style="font-family:tahoma,sans-serif;font-size:xx-small;border-collapse:collapse"><strong><span style="font-size:8pt"><span style="font-size:small"><font size="2"><span style="font-weight:normal">site: <a href="http://www.10pines.com/" style="color:rgb(17,65,112)" target="_blank">http://www.10Pines.com</a></span></font></span></span></strong></span></div><div style="font-size:12.8px"><font face="tahoma, sans-serif"><span style="border-collapse:collapse">Address: Alem 896</span></font>, Floor 6, Buenos Aires, Argentina</div></div></div></div></div></div></div></div>