{"id":75891,"date":"2020-03-29T01:43:45","date_gmt":"2020-03-28T23:43:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/vernite-mne-moj-monolit"},"modified":"2020-03-29T01:43:45","modified_gmt":"2020-03-28T23:43:45","slug":"vernite-mne-moj-monolit","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/vernite-mne-moj-monolit","title":{"rendered":"Tooge mulle tagasi mu monoliit","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Tundub, et microservice'ide buum on saanud oma l\u00f5pu. Me ei loe enam mitu korda n\u00e4dalas postitusi \"Kuidas ma muutsin oma monoliidi 150 teenuseks\". N\u00fc\u00fcd kuulen ma tihemini m\u00f5istlikke m\u00f5tteid: \"Ma ei vihka monoliiti, ma lihtsalt hoolin efektiivsusest\". Oleme isegi \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u043b\u0438 mitmeid migratsioone microservice'idest tagasi monoliidi poole<\/a><\/noindex>. \u00dcleminekul \u00fchest suurest rakendusest v\u00e4iksemate teenuste juurde peate lahendama mitmeid uusi probleeme. Loetleme need v\u00f5imalikult l\u00fchidalt.
\n<\/a><\/noindex><\/p>\n

Installeerimine: p\u00f5hikeemiast kvantmehaanika juurde<\/h1>\n

\nP\u00f5hi andmebaasi ja rakenduse seadistamine taustaprotsessiga oli t\u00e4pselt m\u00e4\u00e4ratletud tegevus. Avaldan readme Githubis \u2014 ja sageli juba tunni, maksimaalselt paari tunni p\u00e4rast, k\u00f5ik t\u00f6\u00f6tab ning alustan uut projekti. Koodi lisamine ja k\u00e4ivitamine, v\u00e4hemalt algse keskkonna jaoks, toimub juba esimesel p\u00e4eval. Kuid kui me julgeme minna mikroteenuste peale, t\u00f5useb algse k\u00e4ivitamise aeg j\u00e4rsult. Jah, n\u00fc\u00fcd on meil Docker orkestreerimise ja K8 masinaklastriga, kuid algajale programmistile on see k\u00f5ik tunduvalt keerulisem. Paljudele noorematele spetsialistidele on see koorem, mis tegelikult on \u00fclearune keerukus.<\/p>\n

S\u00fcsteemi m\u00f5istmine ei ole lihtne<\/h1>\n

\nPeatame hetkeks meie noore spetsialisti peale. Monoliitsete rakendustega oli vea korral lihtne j\u00e4lgida ja kohe t\u00f5rkeotsingule asuda. N\u00fc\u00fcd on meil teenus, mis suhtleb teise teenusega, mis paneb midagi s\u00f5numite bussile j\u00e4rjekorda, mis t\u00f6\u00f6tab teise teenusega - ja siin tekib viga. Peame kokku koguma k\u00f5ik need osad, et l\u00f5puks teada saada, et teenus A t\u00f6\u00f6tab versioonis 11, samas kui teenus E ootab juba versiooni 12. See on t\u00e4iesti erinev minu tavalisest konsolideeritud ajakirjast: pean kasutama interaktiivset terminali\/debuginstrumenti, et samm-sammult l\u00e4bi protsessi minna. T\u00f5rkeotsing ja arusaamine on sisuliselt muutunud keerulisemaks.<\/p>\n

Kui ei saa t\u00f5rkeotsingut teha, siis testime neid.<\/h1>\n

\nJ\u00e4tkuv integratsioon ja j\u00e4tkuv arendus on praegu muutumas igap\u00e4evaseks. Enamik uusi rakendusi, mida ma n\u00e4en, koostavad iga uue versiooniga automaatselt testid ja n\u00f5uavad, et testid l\u00e4heksid l\u00e4bi ja vaadataks \u00fcle enne registreerimist. Need on suurep\u00e4rased protsessid, millest ei saa loobuda, need on saanud paljude ettev\u00f5tete jaoks suureks muudatuseks. Kuid n\u00fc\u00fcd, et oma teenust t\u00f5eliselt testida, pean ma k\u00e4ivitama oma rakenduse t\u00e4isversiooni. Kas m\u00e4letate seda uut inseneri 150 teenuse K8 klastriga? Noh, n\u00fc\u00fcd \u00f5pime oma CI s\u00fcsteemi, kuidas k\u00e4ivitada k\u00f5ik need s\u00fcsteemid, et kontrollida, kas k\u00f5ik t\u00f5eliselt t\u00f6\u00f6tab. T\u00f5en\u00e4oliselt on see liiga palju vaeva, seega testime lihtsalt iga osa eraldi: olen kindel, et meie spetsifikatsioonid on piisavalt head, API-d on puhtad, ja teenuse talitlush\u00e4ire on isoleeritud ja ei m\u00f5juta teisi.<\/p>\n

K\u00f5igil kompromissidel on t\u00f5sine p\u00f5hjus. Eks?<\/h1>\n

\nMikroteenuste kasutamiseks on palju p\u00f5hjuseid. Olen n\u00e4inud, et seda tehakse suurema paindlikkuse, meeskondade skaleerimise, j\u00f5udluse ja parema t\u00f6\u00f6kindluse tagamiseks. Kuid tegelikkuses oleme investeerinud aastak\u00fcmneid monoliitide arendust\u00f6\u00f6riistadesse ja praktikatese, mis j\u00e4tkuvalt arenevad. T\u00f6\u00f6tab professionaalidega erinevates tehnoloogiates. Tavaliselt r\u00e4\u00e4gime skaleerimisest, sest nad puutuvad kokku Postgresi \u00fcksiku andmebaasi s\u00f5lme piirangutega. Suur osa vestlustest on p\u00fchendatud andmebaasi skaleerimisele<\/a><\/noindex>.<\/p>\n

Aga mind huvitab alati nende arhitektuur. Millisel \u00fcleminekuetapil mikroteenustele nad on. On huvitav j\u00e4lgida, kuidas \u00fcha rohkem insenere \u00fctleb, et nad on oma monoliitse rakendusega rahul. Paljud saavad mikroteenustest kasu ja eelised kaaluvad \u00fcles \u00fclemineku raskused. Kuid isiklikult tahan v\u00e4ga oma monoliitset rakendust, kohta rannas \u2013 ja olen t\u00e4iesti \u00f5nnelik.
\n
Allikas: habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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