<div dir="ltr">Hi,<div><br></div><div>I want to add an option which handle by another project Tooz.</div><div><br></div><div><a href="https://github.com/openstack/tooz">https://github.com/openstack/tooz</a><br></div><div><br></div><div>with redis or some other drivers, it seems pretty a good choice.</div><div><br></div><div>Any comments?</div><div><br></div><div>Wei Wang</div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-05-17 6:53 GMT+08:00 Ilya Chukhnakov <span dir="ltr"><<a href="mailto:ichukhnakov@mirantis.com" target="_blank">ichukhnakov@mirantis.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><span class=""><br><div><blockquote type="cite"><div>On 16 May 2016, at 20:01, Michał Dulko <<a href="mailto:michal.dulko@intel.com" target="_blank">michal.dulko@intel.com</a>> wrote:</div><div><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">It's not directly related, but this reminds me of tests done by geguileo</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">[1] some time ago that were comparing different methods of preventing DB</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">race conditions in concurrent environment. Maybe you'll also find them</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">useful as you'll probably need to do something like conditional update</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">to increment a revision number.</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">[1]<span> </span></span><a href="https://github.com/Akrog/test-cinder-atomic-states" style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px" target="_blank">https://github.com/Akrog/test-cinder-atomic-states</a><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"></div></blockquote></div><br></span><div><div>Thanks for the link. The SQLA revisions are similar to the 'solutions/update_with_where',</div><div>but they use the dedicated column for that [2]. And as long as it is properly configured,</div></div><div>it happens 'automagically' (SQLA will take care of adding proper 'where' to 'update').</div><div><br></div><div>[2] <a href="http://docs.sqlalchemy.org/en/latest/orm/versioning.html" target="_blank">http://docs.sqlalchemy.org/en/latest/orm/versioning.html</a></div></div><br>__________________________________________________________________________<br>
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