[Letodb-developers] Changelog 2016-09-30 08:50 UTC+0300 Alexander Kresin

[Alexander S.K. <al...@be...>]

2016-09-30 08:50 UTC+0300 Alexander Kresin (alex/at/belacy.ru)
   * source/server/letofunc.c
     ! Yet another fixes for No_Save_WA mode. Works normally now for a 
simple tests.
   * source/server/server.prg
     * Requests for few bit functions added.

	By default, LetoDb server opens all files in exclusive mode and these 
opened files are shared by all users. This allows to decrease the number 
of opened files, to save memory and to speed up some operations - 
because exclusive mode works faster than shared (no need for locks, more 
buffers).
	But, on the other side, this mode doesn't allow to use internal DBFCDX 
index buffers, because each new operation for a request from another 
user resets them - this may cause slowdown in some cases and more 
intensive disk usage.
	If you set in letodb.ini No_Save_WA = 1, you switch LetoDb server to 
another mode: opened files are not shared between users, each workarea 
is "personal" as in usual DBFCDX based application. Now, after latest 
fixes, this mode should work - it works here, with a simple tests, but 
isn't tested properly yet. And I know nothing yet, will it be faster or 
no. Anyway, the benefit may appear for a relatively big files.
Testing of this mode is appreciated.

Regards, Alexander.