C # imirongo yicecekeye yica SQL Seriveri yawe muri Dapper

C # Imirongo iratuza bucece imikorere yububiko bwawe

Niba uri umushinga wa .NET ukoresheje Dapper kugirango ubone amakuru yawe, wahisemo neza imikorere nuburyo bworoshye. Dapper ni micro-ORM itangaje ituma wegera ibyuma, ukirinda hejuru kandi bigoye kurwego runini. Ariko izo mbaraga zizana inshingano. Ingeso isa ninzirakarengane yo kwandikisha, ikwirakwira muri C # porogaramu, birashoboka ko ibangamira imikorere ya SQL Seriveri: ukoresheje umurongo wanditseho umurongo wibibazo bya SQL. Iyi myitozo yica bucece imikorere yububiko bwawe bwateguwe neza, biganisha kubibazo bitinda kandi uburambe bwabakoresha. Kurubuga nka Mewayz, aho gukoresha neza amakuru ari ngombwa mugucunga ibikorwa byubucuruzi, uyu ni umwicanyi ukora udashobora kugura.

Ironderero Magic hamwe numukiza wa Parameterize

Icyambere, reka twumve impamvu indangagaciro ari ngombwa. Ububikoshingiro ni nkibipimo biri mu gitabo; yemerera SQL Seriveri kubona amakuru atabanje gusikana page yose (cyangwa umurongo). Iyo ukoresheje ikibazo hamwe ningingo ya 'AHO', ikibazo optimizer ireba indangagaciro nziza yo gukoresha. Urufunguzo rwubumaji ni uguteganya. Iyo ukoresheje ikibazo cyibanze, utanga optimizer igaragara neza, ihamye yo gukorana na.

Dore itandukaniro. Suzuma izi ngero zombi Dapper:

// Ibi ni bibi - Guhuza umurongo
var umukoreshaId = "12345";
var sql = $ "HITAMO * KUBAKORESHE AHO UmukoreshaId = {umukoreshaId}";
var umukoresha = guhuza. Ikibazo (sql);

na

// Ibi nibyiza - Ikibazo cya Parameterized
var sql = "HITAMO * KUBAKORESHE AHO UmukoreshaId = @UserId";
var umukoresha = guhuza. Ikibazo (sql, shyashya {UmukoreshaId = 12345});

Urugero rwa mbere rukora umugozi wihariye wa SQL kuri buri `userId` zitandukanye. Urebye kuri SQL Seriveri, irabona ikibazo gishya rwose buri gihe: kimwe kuri `UserId = 12345`, ikindi kuri` UserId = 67890`, nibindi. Urugero rwa kabiri rwohereza kimwe ikibazo cyumugozi buri gihe, gusa uhindura ibipimo byagaciro. Uku guhuzagurika ni ishingiro ryibibazo bikora neza.

Uburyo Ikurikiranyabihe Abanditsi Sabotage Ikibazo Cyateganijwe Caking

Intandaro yikibazo kiri mubibazo byateganijwe. SQL Seriveri ikusanya umugozi wa SQL muri gahunda yo gusohoza - igishushanyo mbonera cyo kugarura amakuru. Iki cyegeranyo gihenze, SQL Seriveri rero ihagarika gahunda yo kuzikoresha. Hamwe nibibazo byerekanwe, gahunda ya `HITAMO * KUBAKORESHE AHO UmukoreshaId = @ UmukoreshaId` yakusanyirijwe rimwe, cashe, kandi ikoreshwa kuri buri guhamagarwa gukurikira, tutitaye ku gaciro nyako k'irangamuntu. Iyi gahunda yihishe yateguwe kugirango ikoreshe neza indangagaciro ku nkingi ya `UserId`.

Iyo ukoresheje umurongo wimirongo isanzwe, buri gaciro kihariye gatanga umugozi wihariye wa SQL. SQL Seriveri ifata buri kimwe nkikibazo gishya, kigahatira guta CPU cyikusanyamakuru no gukora gahunda nshya yo gukora buri gihe. Ibi byuzura byihuse gahunda ya cache hafi ya imwe, gahunda imwe yo gukoresha, kwirukana izindi gahunda zingirakamaro no guta kwibuka. Kunegura cyane, optimizer akenshi ntishobora gukoresha byimazeyo indangagaciro nziza kubibazo bimwe, rimwe na rimwe bikavamo imbonerahamwe yo gusikana aho gushakisha. Indangagaciro-yimikorere yawe ihinduka imitako idafite akamaro.

Ingaruka Yimikorere Ntushobora Kwirengagiza

Ingaruka ziyi anti-pattern zirakomeye kandi zuzuzanya mugihe.

• Ikoreshwa rya CPU Ryinshi: Guhora mubibazo byakusanyirijwe hejuru ya CPU ya seriveri yawe.
• Tegura Cache Bloat: Ubwihisho bwuzuyemo gahunda imwe yo gukoresha, bikomeretsa imikorere yibibazo byose kuri seriveri.
• Ingaruka z'umutekano: Ubu buryo bwugurura umuryango wibitero byatewe na SQL, intege nke zikomeye zerekana ibibazo bisanzwe birinda.

Kubikorwa bya sisitemu yubucuruzi nka Mewayz, ikora amakuru yingirakamaro ya modular kubisosiyete, ibyo bibazo birashobora guhagarika imikorere ya porogaramu, bikagira ingaruka ku musaruro wabakoresha no kunyurwa.

Gukemura Ikibazo: Emera ibipimo hanyuma usubiremo code yawe

Igisubizo kiroroshye kandi gihuza nibikorwa byiza wagombye kuba ukurikiza. Buri gihe ukoreshe ibibazo byerekanwe hamwe na Dapper. Dapper ituma ibi byoroshye bidasanzwe mukwemerera gutambutsa ibipimo nkibintu bitazwi cyangwa ibipimo bigenda neza. Ibi ntibisobanura gusa gusaba kwawe kurwanya inshinge za SQL ahubwo binemeza ko ibibazo byawe ari cache-kandi birashobora gukoresha neza indangagaciro zawe.

Byongeye kandi, buri gihe ukurikirane gahunda ya SQL Seriveri yawe. Shakisha umubare munini wibibazo bya "Adhoc", akenshi ni ikimenyetso cyo kuvuga iki kibazo. Koresha ibikoresho nka SQL Server Management Studio (SSMS) kugirango usesengure imikorere yikibazo kandi umenye scan aho ibishaka bigomba kubera. Mugukoresha ibipimo ngenderwaho no gukurikirana ibikorwa, ufungura ubushobozi bwuzuye bwububiko bwawe, ukemeza ko urubuga nka Mewayz rushobora gutanga imikorere yihuse, yizewe ubucuruzi bugezweho busaba.

Ibibazo bikunze kubazwa

C # Imirongo iratuza bucece imikorere yububiko bwawe

Niba uri umushinga wa .NET ukoresheje Dapper kugirango ubone amakuru yawe, wahisemo neza imikorere nuburyo bworoshye. Dapper ni micro-ORM itangaje ituma wegera ibyuma, ukirinda hejuru kandi bigoye kurwego runini. Ariko izo mbaraga zizana inshingano. Ingeso isa ninzirakarengane yo kwandikisha, ikwirakwira muri C # porogaramu, birashoboka ko ibangamira imikorere ya SQL Seriveri: ukoresheje umurongo wanditseho umurongo wibibazo bya SQL. Iyi myitozo yica bucece imikorere yububiko bwawe bwateguwe neza, biganisha kubibazo bitinda kandi uburambe bwabakoresha. Kurubuga nka Mewayz, aho gukoresha neza amakuru ari ngombwa mugucunga ibikorwa byubucuruzi, uyu ni umwicanyi ukora udashobora kugura.

Ironderero Magic n'Umukiza Parameterized

Icyambere, reka twumve impamvu indangagaciro ari ngombwa. Ububikoshingiro ni nkibipimo biri mu gitabo; yemerera SQL Seriveri kubona amakuru atabanje gusikana page yose (cyangwa umurongo). Iyo ukoresheje ikibazo hamwe ningingo ya 'AHO', ikibazo optimizer ireba indangagaciro nziza yo gukoresha. Urufunguzo rwubumaji ni uguteganya. Iyo ukoresheje ikibazo cyibanze, utanga optimizer igaragara neza, ihamye yo gukorana na.

Uburyo Ikurikiranyabihe Abanditsi Sabotage Ikibazo Cyateganijwe

Intandaro yikibazo kiri mubibazo byateganijwe. SQL Seriveri ikusanya umugozi wa SQL muri gahunda yo gusohoza - igishushanyo mbonera cyo kugarura amakuru. Iki cyegeranyo gihenze, SQL Seriveri rero ihagarika gahunda yo kuzikoresha. Hamwe nibibazo byerekanwe, gahunda ya `HITAMO * KUBAKORESHE AHO UmukoreshaId = @ UmukoreshaId` yakusanyirijwe rimwe, cashe, kandi ikoreshwa kuri buri guhamagarwa gukurikira, tutitaye ku gaciro nyako k'irangamuntu. Iyi gahunda yihishe yateguwe kugirango ikoreshe neza indangagaciro ku nkingi ya `UserId`.

Ingaruka Yimikorere Ntushobora Kwirengagiza

Ingaruka ziyi anti-pattern zirakomeye kandi zuzuzanya mugihe.

Gukemura Ikibazo: Emera ibipimo hanyuma usubiremo code yawe

Igisubizo kiroroshye kandi gihuza nibikorwa byiza wagombye kuba ukurikiza. Buri gihe ukoreshe ibibazo byerekanwe hamwe na Dapper. Dapper ituma ibi byoroshye bidasanzwe mukwemerera gutambutsa ibipimo nkibintu bitazwi cyangwa ibipimo bigenda neza. Ibi ntabwo bikingira gusa porogaramu yawe kurwanya inshinge za SQL ahubwo inemeza ko ibibazo byawe ari cache-kandi birashobora gukoresha neza indangagaciro zawe.

Ibikoresho byawe byose byubucuruzi ahantu hamwe

Hagarika guhuza porogaramu nyinshi. Mewayz ikomatanya ibikoresho 208 kumadorari 49 gusa / ukwezi - kuva kubarura kugeza HR, kubika kugeza kubisesengura. Nta karita y'inguzanyo isabwa gutangira.

{"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{" a .Natezimbere ukoresheje Dapper kugirango ubone amakuru yawe, wahisemo neza imikorere nubworoherane. Dapper ni micro-ORM itangaje ikomeza kuba hafi yicyuma, ukirinda imitwe isa ninzirakarengane, ikwirakwizwa mubikorwa bya SQL Serveri ibibazo bidahwitse hamwe nuburambe bwabakoresha. Kubibuga nka Mewayz, aho gukoresha neza amakuru ari ngombwa mugucunga ibikorwa byubucuruzi, uyu ni umwicanyi ukora udashobora kwigura. " igitabo cyemerera SQL Seriveri kubona amakuru utabanje gusikana buri paji imwe (cyangwa umurongo). Iyo ukoresheje ikibazo hamwe n’ingingo ya "AHO", ikibazo cyiza cyo gushakisha icyerekezo cyiza cyo gukoresha. Cishing "," yemeyeAnswer ": {" @ ubwoko ":" Igisubizo "," inyandiko ":" Intandaro yikibazo kiri muri Query Plan Cache. SQL Seriveri ikusanya umugozi wa SQL muri gahunda yo gusohoza - igishushanyo mbonera cyuburyo bwo kugarura amakuru. cashe, kandi yongeye gukoreshwa kuri buri guhamagarwa gukurikiraho, hatitawe ku gaciro nyirizina. Iyi gahunda yihishe yagenewe gukoresha neza indangagaciro ku nkingi ya "UserId". " igihe. " Gutera SQL ariko kandi iremeza ko ibibazo byawe ari cache kandi birashobora gukoresha neza indangagaciro zawe. "}}]}

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