Osankha mu CSS atha kutithandiza mosavuta kuwonjezera masitaelo ofunikira pazinthu zomwe zanenedwa. .

JavaScript ndi chilankhulo chomwe chidzagwiritsidwe ntchito popanga masamba awebusayiti.Iyi ikufotokoza mwatsatanetsatane momwe mungapezere nambala yeniyeni yamakalata apano pa nthawi yothamanga.

JavaScript ndi chilankhulo chomwe chidzagwiritsidwenso ntchito pokonza tsamba lawebusayiti, pomwe ena mwa iwo ndi osafotokozedwa nthawi zambiri timakumana nawo.

SetInterval ikamayambira kumbuyo kwa msakatuli, nthawi yaying'ono imasinthidwa mokakamizidwa kukhala ma millisecond 1000, ndipo imayimilira mutatha kwakanthawi. Nkhaniyi ikufotokoza momwe mungathetsere vutoli.

Malo osakwanira a disk pa Linux nthawi zambiri amayamba chifukwa cha mafayilo amtundu wambiri. Koma nthawi zambiri sitidziwa komwe mafayilo amalo amasungidwa. Pakadali pano, tifunika kuyang'ana kukula kwa chikwatu chosanjikiza kuti mupeze komwe fayilo ili. Nkhaniyi ikukhazikitsa lamulo pa Linux kuti muwone kukula kwa fayilo ya chikwatu.

Polemba ndikukhazikitsa Redis5 pa CentOS7, panali vuto lomwe jemalloc.h silinapezeke. Nkhaniyi ikufotokoza momwe mungathetsere vutoli.

Polemba ndikukhazikitsa Python3, panali cholakwika pamutuwo. Nkhaniyi ikufotokoza momwe mungathetsere vutoli.

Ma diode amagwiritsidwa ntchito kwambiri pamagetsi. Nkhaniyi imafotokoza makamaka zakusintha ndi kusintha kwa ma diode.

Tikamalemba nambala, nthawi zonse pamakhala zolakwika m'malo ena, ndipo zolakwikazi ndizosapeweka ndipo titha kuzinyalanyaza Pakadali pano, titha kugwiritsa ntchito zolakwitsa za PHP kuti tipewe zolakwika.

Kugwiritsa ntchito YUM kukhazikitsa pulogalamuyo ndikosavuta kuposa kulemba ndi kukhazikitsa. Koma ngati seva yathu ilibe IP yapagulu pamakina amkati, tifunika kulumikizana ndi netiweki yapagulu kudzera pa proxy. Nkhaniyi ikufotokoza momwe mungasinthire proxy SOCKS5 ya YUM.

Apache ndi pulogalamu yapaintaneti yogwiritsidwa ntchito kwambiri padziko lonse lapansi. Imatha kugwira pafupifupi makompyuta onse omwe amagwiritsidwa ntchito kwambiri.Chifukwa chogwiritsa ntchito mtanda komanso chitetezo chimagwiritsidwa ntchito kwambiri, ndi imodzi mwa mapulogalamu otchuka kwambiri pa intaneti. Nkhaniyi ikufotokoza mwatsatanetsatane momwe mungakhalire Apache pa CentOS7.

.NET ndi nsanja yotukula ya Microsoft, chifukwa imatha kungoyenda pa Windows m'masiku oyambirira, ili ndi malire ambiri. Koma chatsopano cha .NET Core chathandiza kale kuyendetsa Linux. Nkhaniyi ikufotokoza mwatsatanetsatane momwe mungayikitsire .NET Core pa CentOS7.

MySQL ndi malo osungira omwe amagwiritsidwa ntchito kwambiri. MySQL8 ndiyotetezeka kwambiri komanso yowonjezera chitetezo kuposa mtundu wakale. Nthawi yomweyo, MySQL8 yapanganso kukhathamiritsa kambiri pakugwira ntchito. Nkhaniyi ikufotokoza mwatsatanetsatane momwe mungakhalire ndikusintha MySQL8 pa CentOS7.

SVN ndi chidule cha chiwonongeko, njira yotseguka yotsegulira mawonekedwe. Nthawi zambiri amagwiritsidwa ntchito kuti anthu angapo apange mgwirizano womwewo mogwirizana, kukwaniritsa zomwe agawana nawo, ndipo pamapeto pake oyang'anira pakati. Nkhaniyi ikufotokoza mwatsatanetsatane momwe mungakhalire ntchito ya SVN pa CentOS7.

MariaDB ndi nthambi ya MySQL. Kugwiritsa ntchito kwake kuli kofanana ndi MySQL, koma imathandizira masango ambiri, omwe ndi osiyana ndi akapolo akapolo a MySQL. Nkhaniyi ikufotokoza mwatsatanetsatane momwe mungakhalire MariaDB 10.4 pa CentOS7.

Ngati tikufuna kuwonjezera ndikuchotsa masiku ndi nthawi mu MySQL, titha kugwiritsa ntchito: DATE_ADD, DATE_SUB, ADDDATE, SUBDATE, nkhaniyi ifotokoza momwe ntchitoyi imagwirira ntchito mwatsatanetsatane.

Nthawi zambiri timafunikira kulanda zolakwika zapadziko lonse mu PHP ndikulemba zipika, kuti tipeze zovuta zomwe zingachitike pulogalamuyi munthawi yake. Koma titakhazikitsa cholakwika pakubwezeretsanso ntchito ndi set_error_handler, sitingathe kupeza zolakwika za FATAL. Nkhaniyi ikufotokoza momwe mungatengere zolakwika za FATAL zomwe zimapangidwa nthawi ya PHP.

EMQX ndi seva yathunthu ya MQTT.Nkhaniyi ikufotokoza momwe mungapangire nambala yololeza kuyitanitsa mawonekedwe a API a EMQX.

EMQX ndi seva yabwino kwambiri ya MQTT.Nkhaniyi ikufotokoza momwe mungagwiritsire ntchito nambala yanu yoyang'anira chilolezo pomwe makasitomala anzeru amalumikizana ndi ntchito ndikulembetsa kuti afalitse mitu.

EMQX ndi seva yabwino kwambiri ya uthenga wa MQTT.Tsango lake limathandizira kulumikizana makumi a mamiliyoni ndipo limakhala ndi njira yowonjezera yosinthira. Nkhaniyi ikufotokoza mwatsatanetsatane momwe mungakhalire EMQX pa CentOS7.