Thanks. Since we're hoping to get this XBlock folded into edx.org, we definitely want it to play as nicely as possible.
On Wed, Apr 24, 2019 at 6:52 PM David Ormsbee <[email protected]> wrote: > We don't actually enforce any limits as far as I know, and it's bitten us > badly in the past. XBlock will let you make fields that large and serialize > them to MySQL, but you'll start getting performance issues if you start > doing it on a frequent basis. We have had partial outages because one block > type was storing 2MB blobs of user state in a popular course. > > If you do need something user-state related that is this big, you might > want to look into using the Filesystem field. This field can be a little > weird for typical use, because it's basically a window into a file system > instead of a simple value and it doesn't use the courseware_studentmodule > table like everything else. But it will store things in S3 or some other > pyfs-configured storage, and save your MySQL instance from getting pounded > quite as hard. > > Take care. > > Dave > > On Wed, Apr 24, 2019 at 6:33 PM <[email protected]> wrote: > >> Hi, everyone! >> >> We're looking at creating an XBlock where our learners can journal on >> specific topics, or make rough drafts of written works. Luis Duarte >> mentioned to me that he heard there's a maximum storage amount per field in >> an XBlock, so I wanted to see if anyone knows what it is. If it's, say, >> 640k, then we're basically all set. If it's, say, a few tweets worth, then >> that's a problem. >> >> Anyone know? >> >> -- >> You received this message because you are subscribed to the Google Groups >> "General Open edX discussion" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/edx-code/36804165-a054-45e8-8a5d-02f835e89b96%40googlegroups.com >> <https://groups.google.com/d/msgid/edx-code/36804165-a054-45e8-8a5d-02f835e89b96%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to a topic in the > Google Groups "General Open edX discussion" group. > To view this discussion on the web visit > https://groups.google.com/d/msgid/edx-code/CAO_oFPwhDUV7JZk2v%2BRcaeM6W0-OY5P8gWNsEuxrGX%2By2%3DC1-Q%40mail.gmail.com > <https://groups.google.com/d/msgid/edx-code/CAO_oFPwhDUV7JZk2v%2BRcaeM6W0-OY5P8gWNsEuxrGX%2By2%3DC1-Q%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "General Open edX discussion" group. To view this discussion on the web visit https://groups.google.com/d/msgid/edx-code/CABmE_WJCG6Sf3G6TxgZPeuW34%3DxfVggFkNCtobM0Hwn2j4CwTQ%40mail.gmail.com.
