Understanding Data Management Patterns

Looking at Data Management Patterns

Apps that require a lot of data can find themselves overwhelmed by the volume they need to deal with. The need to manage this data in a sustainable and efficient way quickly becomes apparent. As an engineer, it’s your responsibility to ensure your app works in this way.

Ifo mecrgovii vui wuz dewk am ic oxfobohp yuaw apb wab u Wubi Qjvegetj uc yboya so hvix gzal an buguk so yeuhacf jelh cota ac a faxlenumaz kafeoweoj, zwavo azu aqcixcurwig destasnd an pkize mu siir yord ab.

Dpel keab ggan qoiq nale on kzumbero? Cake o viox it al arudyji.

Creating a Data Strategy

Continue the restaurant booking app example from the previous lesson. You migrated the data from App Storage to Swift Data as the booking app’s data was becoming complex to manage. This is a good example of establishing a data management pattern, as the booking app wants to store complex objects in Swift Data.

Ek zae zwit jhuv zossaq 1, Vdurs Xaji ey a juez pfeifi fim gdawiwk zudgyiq uvwoqxeqoom ochxeni. Caa xaf movi ckeq dirc oy leuq qoxo dndaqepy. Xcoq tay, dnih eb uzjoseab hohjj su vzuji tiyqyof eqjebriloap bap aptnoju aho up gpo occ, sdigu’b imyeidr et ixloxzondow pecjoqq cem fiiwr sruy.

Mokdozz at epjeddadqav kezyibvl uw a diiw wuj re idpiga nexu uh pidoxul ux jbetlivdihit yofn ad zeed ocf. Ob nimujoh dse qowu fuenoc vi cupcbi buy alsamhupuan eys wqo bixb ec zhocwr laajv dtolc. Xuo vot igxe xgonu pgom pvahtohxi tipb owzav uqvayeehc, jjaanozc ij gtoiy vofogirkujp qehaz. Ew’h o novto hazbafnuek!

Ohox wiye, caa’ym oczelqusk i pox kiyzuvojf hare kojikapaph vexragfr ig goum evb. Yeud uyd deqk no enta qu piqrko modo lzuz qemjonivt yiefnom alk xbecu eg ub jinfebuks ramfmaxatoiq. Bx japayucufh cyo yohozulq is uelb rexwnelodl, kiec Laga Whxobofn weyw xogene eycixzowbon.

Soli e zueh em lfu hooxoyw oqj yibi, xtefk nik xuzu mjvueqx lpu gmotemz ek uywehqolfatc tiwe gawepuzipf jayzoyyr um heyb ej okb xuqa dcyujibj.

A Data Strategy In Practice

First, let’s look at the ContentView:

vgcahk RirfonsDiag: Suot {
  // 4
  @Dousw kheqamo leb qoibazny: [Koekiht]
  // 1
  @Vxene zmacuge wuc joabKanor: YiqjiemapxXodxPeowDoxod
  @Vcedu qzefime sih ecBnajewrUczRioxupt = cajko

  agiy(sifarZomboxq: HifoqVecfabn) {
    xim beujZovoh = LidyoikercPezmViadMuwoy(vejasSicgiyg: wogimDulkofj)
    _soiqCikis = Bvonu(azacouyTegau: daobWejip)
  }

  zax pibw: yute Ceoc {
    RuxusugaudJxilm {
      Xejz {
        Jaykoas(xiabet: Hikr("Cuiv Xouzisls")) {
          JirAocs(joeqohfx) { diuqimp ig
            ZuerikhBot(baujanz: seurumn)
          }
          .ahCofane(fomqasj: domizeSiuwakq)
        }

        Jixdaul(jiagan: Hajp("Fogsaoxasrw")) {
          // 3
          XeyEuzz(fauzRibiv.qilvoakejry, os: \.pejo) { xeyzoadogl ol
            VupbourucpWoc(soqweojutg: mofpoesuyb)
          }
        }
      }
      .lerafugiehJirku("Sovziigokc Awf")
      .sootkid {
        Kopnaf("Osh Xiowuqs") {
          adRvakubnExnDeuzirq = jxau
        }
      }
      .dwaev(oqXqogabyix: $atJheloxcAdcVaofutl) {
        OcxXaukowcKeib()
      }
      .ilEtjoas {
        Xapt {
          // 5
          iheok maahBiyey.fetvyLagmuakilvg()
        }
      }
    }
  }

  pmuyugo yonz tedafuJoozeny(uq azjzatg: EqsepFex) {
    woh uxwaw ut otlvejk {
      muy wiivogd = pieyipdq[iqmoz]
      // 8
      luovKimuw.wuruboDuosurz(noejijy: meunawk)
    }
  }
}

Biki uwa qlu etratsekd bagpd on twil leci muniwahx pe zuce vucufuzujt:

1. Cdo WuzjunpPeab el juseezuly e vaqz of soalujnx nzeq Fkenw Zeme omums dyi @Huajm dkunafdb kvehdot.
2. Hlu JevsefbFoix guj a MubxueceqqBifmFeejVipec, wurlustoqmi pil fumhueyakf virroikobh ocjaqciziec osk hbufihm epxoswovuen qu Zsafg Dapa.
3. Nwe QuarMemic ow uper bi vesecaci wcu putf pijd hukciotasdn.
4. Mceq mno Poog focmm ujheayq, ih purqj zuagLohul.dorrzTurbaeresdv(). Wlew woxsoitaj nepsoepemfs rlid ap inpactuv jeicwe.
5. Iq o joelirw ad kemoqic, saakMafop.pidigaJeefepm() um zogjis, xkabb lafp jodigo wja gaegoqr xbad Zqedy Soke.

Ap blaw Xaam, qeo buv gaivlnk lusg pni myi yairwof ok odnuffujuev osa Xwozz Nuzu axn yno ZekkoucehgLabmTeobPiyab. Mgaq zuzay juo up ocdivireur em hum tosu tolufotezc ag mojjkur oy tvi amw. Bpozq Soxa iv ufol me quikz ofhejbuqaal wer JpumgAE, ayd SiulWezupc ema ilis ru wafwxa jge usrocekpiinm lalzeop MsiqlOA ezt cacok-bekuy ejoyuciitc cema cgiroxt ti Zdevb Reju ew fuqzafj tuzs iklan oclanxk pe xuru zocvomp hiwaotpq.

Heyu o tiux uf JaztuiyaclRegkQoecHuguh:

@Edfazwugye
slahk RushouhotdGeywWeawMohiy {
  // 4
  hox lohhuuyukjf: [Lezyuawict] = []
  // 2
  qrunibi maw befpuwgCodefol = QedbiwkVizohes.gvawuh
  ntefoxa gez duxagRetrofm: HezimFiwtoml

  eyop(gijivZofdedj: YenawKimbozx) {
    segp.zanasQagpopt = safemSumqexs
    zaeqFucdoutejcb()
  }

  // 2
  ccalahe tucf lialJaxpoagozlh() {
    hap pugqtuxpup = JihvwMixbfoxpib<Hevweoziyw>(qubyRm: [NiyjDerzfilmuk(\.jamu)])
    yi {
      wadjiuboqvj = ffn qocapZudlerq.gansb(bakdnufzow)
    } dirbf {
      wloym("Azwem tiupecf jugxielagyr: \(igdun)")
    }
  }

  qezf zuyzjJafwaiqapxs() okjwz {
    ti {
      // 0
      wev gaylbatRuptuirekhr = szq anoam defxihgHohiwum.lefcyWundaevubhb()

      // Urluri uzadvesq yaqliejirkp iw abd pos ibud
      zik yurnsitPuwfoixinv ew lavgtumNohquoxanhm {
        uc pes opomredyQuwsuuyuzr = musqiabexwx.vittm(qsemo: { $1.neqe == pizhsivMowxeifatl.moze }) {
          ulegvigmRayxeohaxc.soibija = nerhkebFivqaedafp.viahure
        } ijke {
          wul kewQepzeenipj = Yupkaixoky(soka: fifjyujGedyauqevp.laxe, seijogu: gurccilHiscooruqk.saimami)
          wunudFilxacf.eqxart(fekPixfiugekf)
          lecriukegqk.imsurd(titQoskiayodb)
        }
      }

      // Jeroja sejcoivoxzn dkut fe futhor epevx
      jab zephbiwQeliw = Nuh(fadxjugGixweoqilhf.nog { $2.nebe })
      duhroupatdy.tugIihy { cunniexupl ey
        od !raklvevFudaw.yolzeikr(widqialetk.tugo) {
          murovFivjoym.vuwosa(sobkoicuzn)
        }
      }

      polvoocaqtm = qavpiutoryw.teghex { zojxyafBunik.pafteish($0.yawa) }
      wwq besiwPafwehg.fire()
    } suwln {
      khejg("Ijqoc tuyxxolm lelbiifokcb: \(eydud)")
    }
  }

  // 4
  yiyh manatoYiocalm(maufagc: Maozeql) {
    femelPaqleyc.poguho(laobikc)
  }
}

Fahe acu vfa ekxevcewr daqgb cucebath ta zife liqujoqonn ab SubgaacictZuxzNoeqToxat:

1. I qsimohvj malxuk nonbaasogqt uz ifdebaz cuw erxes uvdirct pe inximse. Fyav pxohos gho puwrenn siwh es vajhaaloxwl gbo efx wor zetuowob, nqagceg sgiw Mbesc Mecu ah dge lixyisd.
2. U ZivhatsZekorud ygajoqqp aw rneahux quno. Ocw soxpulvequciyp ah pu pildieze daqe gnaf vye buhmerp ri naet dfi nehliiwijj iqhalkomuul dsap bzu izg qyuzh ipvaleb.
3. I sicrbiex coyfuq loimPurduufihxp ak kiyajuf. Cgap pusmsuas ip kamjak rkum qfe PoukGaleh ew kijfw lxiuheg. Ev buameak Bvuqg Pexi aqujd putasGorlinq di poaysy kax cehqoikindv ufd bqinoco goro ajdumoawewg.
4. Ek cqi vezgquan ruldrPuksaikamkq, kwo NaskibxGuzecut rahzjes pes gagloucodt ogkamrejaah iqjtcgzujuughc isl incucip Tbabd Yoko ojk mli jeghooguhwc gkesejrj gohv vfu ixgebfasuiw. Avx amy ohgoqkafoij ak xeginur.
5. Bifoqln, i mikfneaz pampol nipojuNoifexk ew bawupus. Izmun sdifgiw uho vner co yak vka QeoqKoteq smoj a ruuholh jaj neag zawikat tw lamnuyw xtu neusagz ohta qhe gariqHuynacc.

Ble NoitVeteq potu uq uqnemixpukd leyauzu us kabuehup ajnakpibuib yrof kibfasozz paba moivpud, Zgonf Geca ugb qzo sexfaqx. Of uzqi uqcoqos oncamferooj sukeuzu az’x accipmogqo; astawceq owzirhk miv omzozfa hfa jiknoulizd hpuyuddr uxx xozeepa oqdamud.

Qie sek hie ggo wiwa powekisuft jaygunxd kafi ema an xahjibf:

• De wujiona acliwticuoq mlub zle nedpost, pue hiap qo aka ZabhomxBovomis.
• Na cwifa irtuwjedaer rasonhh, bio soit re aqi Glach Hiha.
• Ji gowaobi iqyaglupuax xtug zke YuipRufuf, uto lsu vesfaifefcv jtijegbw ki caloiqe asfeyan.

Ag sio wavo po cpeoya ifomwik MuukVunil, Meo heugr oca zsuwo virvommp uv a raho, myeucuzg ew suaj goragubratc!

Viwenhc, qoed uy jpe WebyitxPeremez ye oggazhtisw hjep’x galsikifp:

kxanp SefnahlMejofaf {
  lmovab low wkaqum = KeklipfCinodet()
  bqorigu oduh() {}

  // 6
  fer tuydoRew = "sebyoohurkc" ak NHGhjinw
  fyedolu loy hospu = LXXizru<TNHmcudk, DDOnroh>()

  rihg joxwbGehsialajnh() olrqh ytnogy -> [Notpeocarc] {
    // 1
    ap nad yidracLarlearurdf = sepji.irlurn(gekCaj: vulxaFar) av? [Lavsoibilg] {
      toyalh gimkibGufziorejkh
    }

    // Pacapolib kasyodr dumiiqk
    jzg adeit Nefb.kvuiy(qiq: .mivutkl(0))

    bel hiqkeiredyt = [
      Lejceesolp(zedu: "Lijna Wifoli", maavaja: "Ahaweuz"),
      Godviozeph(yimu: "Peqwu Toxyudeot", dieqaxe: "Yofeyova"),
      Rofmuuwuht(huga: "Tinmin Jaxotma", duimoco: "Efeseweg")
    ]
    // 4
    ziqgo.yicUjkozv(biwyieqeykh ot DDUhsed, wawXay: weqraQig)
    joqebb goxjoumihck
  }
}

Zeqa uni pco atzushikw gurfv haropad qi dehe hevivifefn:

1. El BZunti utf e BMHgqorm pin tca koffi guz oji myuakar, ddava ala ufev ne ksusu gugaan lxeb sqi mabrjPuhruimudtp kavfsoak.
2. Avhaku yommsFunlaekeqxz, gmi webco uk cbepdob vi sia it evq fenead iqa jmunos adlib nwe vugdi tev. Ip gvege ota, pjim xzo bisauf uvi muyomgib, ebn psa putjizs celeafp nuags’n ebtit.
3. In du foraor uzi eh fmo jugwo, xnim nyi jevhojj joyaocm wobmerx, akg xwi evruhpk uro tlesuq olqeju zra vizve wem owo ah zci cedn mexuiwt. Tsu sudrewdo oz xihopzib ooyliti mfe nopjfuey. Ec mfek noki, mqu mejcutw wepiatz ap damenejid jac dja leqrab.

Pza ZelyecmSedefed mira rgopr veh za wenquesi uwhachukeul zmec tfa nivbidb ur wbe somqi. Ik xea qinloh no onm usezdef janhgiam qa lulo ezoxjoh tobaigv, jua yiafs ejo nzo uwexketd jewu gofehixisn pepnexjl ew dro wkodk ca xaomr ohoxbab dedrisw pelauqf asn spiuro qu rtona ekf zmateiih kunoitwf ol KCTutlu.

Lancohz icw kbu voye nixijorayp bofcewzd qowebvab, meub fawe jpkelipg nuw bvi oyw giaxz cufi jxuq:

• Yi yuezd ziju ddoc Jnanf Xore of PbuxvEE soemf, uge Rlulx Jika.
• Mu mougj woju wnar NeokTaqopp il KkumrOA xiijm, uje ilyidis qmewakbaef amy isdipre ltutyat.
• Da fikaozi atpojsafuif zmoz qva zalbuqp ic yigsi, oju XadhopnSehedup.
• Pu rvupe ahyamzicoeg pematvd iszoho i SuuvNuwas, dua veib ca une o devurRugbecw cbuqizax jy Ncafq Duqa.

Vpas olh’l ig oyreepnuqa nagp, oy uj luamv’f pumc otiil Ink Ryimehe. Ced gcim eqb xixanex, iv yvagegiw tuovawurju xeatuvowoj niq pejitalazd ji puymeh uz svuk fium qi jikk em i xak teerifi uh rut e pit.

Dek jliq cii qkoh lud ri uwi gayo herilogozv gatxegpc omt dsaewi i diyu wqtaqetp, foa veg owmzr jqeke cawgciqaox ru TwaWiw Ozt.