linux - SQL or filesystem for FAST storing files/BLOBs? -


i have app stores quite lot of publications files on filesystem, using nested dirs "6/0/3/6/....". files not huge (.jpg, .pdf, similar documents), there's "just" lot of them, running gb hundreds. once stored in fs, typically never rewritten, served on http.

searching, versioning through such files painfully slow. copying such dirs rather cumbersome.

this got me thinking: not better store such data blobs in db (my app using postgres various purposes anyway).

which 1 -- fs or scalable sql db -- perform better around? or pg collapse under weight?

incremental backup much easier filesystem. recovering partial damage. versioning pretty easy on top of file system long don't need atomic change sets, individual file versioning.

on other hand, using db gets transactional behaviour - atomic commit, multiple concurrent consistent snapshots, etc. costs disk storage efficiency , adds overhead access. means can't sendfile() data directly file system, must several memory copies , encoding , send file.

for high performance server file system going win unless need atomic commit , simultaneous consistent visibility of multiple versions.

there lots of related past questions should read too, concerning whether it's better store images in db or on file system.


Comments

Post a Comment

Popular posts from this blog

blackberry 10 - how to add multiple markers on the google map just by url? -

i have android application, want convert blackberry 10 , google map needed in app,but blackberry 10 not support googlemap , blackberry developer web site supply way replace it.the sample below: @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main); webview webview = (webview) findviewbyid(r.id.mywebview); webview.getsettings().setjavascriptenabled(true); webview.loadurl("http://maps.google.com/?ll=36.97, -122&lci=bike&z=13&t=p"); } i cannot understand it,i not know how add multiple markers on googlemap via url? can me? this worked me map shown in webview.
Read more

php - guestbook returning database data to flash -

i've been struggling problem long , unable make work, hope can me it. first, know php files correct , mysql database works fine. in flash, able submit comment database comments not display. did many tests such making returned_database flash separately , worked fine - can see old comments. long combine submitting 1 , returning 1 together, flash doesn't show comments more. put lower version flash effects on frame thinking doesn't collaborate returning flash, submitting flash works fine. since pretty complex problem hard me copy actionscript code because on different frames in flash. if has ideas fixing maybe can send file you?
Read more

delphi - Dynamic file type icon -

i want register file type in windows , make program delphi draw icon of file according contents (something custom icon format). how can this? thanks nortd , user539484 comments, searched internet "shell icon handler delphi" , found sample here , , shell+ components has component this.
Read more