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max_connections, max_connect_errors, max_delayed_threads

Ãëàâíàÿ Ñòðàíèöà » Êíèãè ïî PHP » MySQL óðîêè äëÿ íà÷èíàþùèõ ñ íóëÿ » max_connections, max_connect_errors, max_delayed_threads â MySQL

max_connections

×èñëî îäíîâðåìåííî äîïóùåííûõ êëèåíòîâ. Óâåëè÷åíèå ýòîãî çíà÷åíèÿ óâåëè÷èâàåò ÷èñëî îïèñàòåëåé ôàéëà, êîòîðûõ òðåáóåò mysqld. Ïîäðîáíîñòè â ðàçäåëå 11.2.5. «Îøèáêà Too many connections».


max_connect_errors

Åñëè ïðåðâàííûõ ïîäêëþ÷åíèé õîñòà áîëüøå, õîñò áóäåò áëîêèðîâàí, è ïîäêëþ÷åíèÿ ñ íåãî ñòàíóò âîîáùå íåâîçìîæíû. Âû ìîæåòå ñíîâà îòêðûòü õîñò êîìàíäîé FLUSH HOSTS.


max_delayed_threads

Íå çàïóñêàòü áîëüøå, ÷åì ýòî ÷èñëî ïîòîêîâ, ÷òîáû îáðàáîòàòü èíñòðóêöèè INSERT DELAYED. Åñëè âû ïîïðîáóåòå âñòàâëÿòü äàííûå â íîâóþ òàáëèöó ïîñëå òîãî, êàê âñå ïîòîêè INSERT DELAYED áóäóò çàíÿòû, ñòðîêà áóäåò âñòàâëåíà, êàê áóäòî àòðèáóò DELAYED íå áûë îïðåäåëåí âîâñå, òî åñòü íåìåäëåííî.