replication - Distributed reading from replica sets in MongoDB -

-

i can read master in replica set. it's easy. know, how read secondary in replica pair? efficient scaling, didn't search it. thanks.

here docs you're looking for.

you'll need dig in specific driver how this.


Comments

Post a Comment

Popular posts from this blog

c# - Getting "Internal .Net Framework Data Provider error 30" error when column has NULL value -

-
i have simple .net console program uses odbcdatareader fetch rows advantage local server. using system dsn defined via odbc administrator on windows 7. data source uses advantage streamlinesql odbc driver v 10.00.00.03 , following params: database path: table type: advantage available server types: local server (als) the program works fine until encounters row has null value in column. exception: system.invalidoperationexception caught message=internal .net framework data provider error 30. source=system.data stacktrace: @ system.data.providerbase.dbbuffer.validate(int32 offset, int32 count) @ system.data.providerbase.dbbuffer.ptrtostringuni(int32 offset, int32 length) @ system.data.odbc.odbcdatareader.internalgetstring(int32 i) @ system.data.odbc.odbcdatareader.getvalue(int32 i, typemap typemap) @ system.data.odbc.odbcdatareader.getvalue(int32 i) @ system.data.odbc.odbcdatareader.isdbnull(int32 i) @ odbctest.program....
Read more

c++ - How to modify context menu of internet explorer using IDocHostUIHandler::ShowContextMenu? -

-
i trying implement custom menu internet explorer 7.0. have use idochostuihandler::showcontextmenu only. till able implement basic context menu 2 options. problem disabled default. sample code same is: hresult cwebeventhandler::showcontextmenu(dword dwid,point *ppt, iunknown *pcmdtarget, idispatch *pdispobject) { if (false) // put guard code here. of not consider return s_false; // show standard context menus. else { iolewindow* pwnd = null; hresult hr = pcmdtarget->queryinterface(iid_iolewindow, (void**) &pwnd); if (succeeded(hr)) { hwnd hwnd; if (succeeded(pwnd->getwindow(&hwnd))) { hmenu menu = ::createpopupmenu(); ::appendmenu(menu, mf_string, id_hello, l"&hello" ); // id_hello & id_world 2 menu resource items ::appendmenu(menu, mf_string, id_world, l"&world" ); ...
Read more

gcc - SSE2 instructions not working in inline assembly with C++ -

-
i have function uses sse2 add values it's supposed add lhs , rhs , store result lhs: template<typename t> void simdadd(t *lhs,t *rhs) { asm volatile("movups %0,%%xmm0"::"m"(lhs)); asm volatile("movups %0,%%xmm1"::"m"(rhs)); switch(sizeof(t)) { case sizeof(uint8_t): asm volatile("paddb %%xmm0,%%xmm1":); break; case sizeof(uint16_t): asm volatile("paddw %%xmm0,%%xmm1":); break; case sizeof(float): asm volatile("addps %%xmm0,%%xmm1":); break; case sizeof(double): asm volatile("addpd %%xmm0,%%xmm1":); break; default: std::cout<<"error"<<std::endl; break; } asm volatile("movups %%xmm0,%0":"=m"(lhs)); } and code uses function this: float *values=new float[4]; float *values2=new float[4]; values[0]=1.0f; ...
Read more