#Utendaji

90 maswali

Streams ni nini katika Node.js na ni lini unapaswa kuzitumia?Node.js#streamsMiddle
Unaweza kuongeza kiwango cha programu ya Node.js kwa CPU nyingi vipi?Node.js#scalingSenior
Unajua kupatanisha na kurekebisha uvujaji wa kumbukumbu katika Node.js?Node.js#debuggingSenior
Ni nini na jinsi gani unavyotumia worker threads?Node.js#performanceMiddle
Ni mikakati ipi ya caching inayoboresha utendaji wa API ya Node?Node.js#performanceMiddle
Unafanyaje profiling na uboreshaji wa utendaji wa Node.js?Node.js#performanceSenior
Backpressure katika streams ni nini na unaishughulikiaje?Node.js#streamsSenior
Ni je wakati unapaswa kutumia useMemo na useCallback, na ni shida gani wanazosuluhisha?React#hooksSenior
React.memo inafanya nini na lini ni sawa kuitumia?React#performanceMiddle
Ni nini sifa za concurrent kama useTransition na useDeferredValue?React#performanceSenior
Suspense na React.lazy zinatoaa kazi vipi kwa ajili ya mgawanyiko wa nambari?React#performanceSenior
Unajifunzaje na kutengeneza matukio ya kutorudi bila sababu?React#performanceSenior
Index ni nini katika SQL? Lini unapaswa na lini hupaswi kuitumia?SQL#indexMiddle
Unaboreshaje hoja za SQL za polepole?SQL#performanceSenior
Ni nini table partitioning?SQL#performanceSenior
Srcset, sizes na picture jinadata vipi kwa ajili ya picha inayoadhani?HTML#mediaMiddle
Mtandao unavyochanganuza HTML na kujenga ukurasa (njia muhimu ya kutengeneza)HTML#performanceSenior
Je nini tofauti kati ya defer na async kwenye scripts?HTML#performanceSenior
Resource hints kama preload, prefetch na preconnect ni nini?HTML#performanceSenior
Je, mzigo wa kupumzika (lazy loading) wa picha/fremu unavyofanya kazi?HTML#performanceSenior
Unawezaje kubaki CSS rendering kuwa na utendaji mzuri (reflow vs repaint)?CSS#performanceSenior
Kwa nini kuna tofauti kati ya debounce na throttle?JavaScript#performanceSenior
Memoization ni nini na unaitekeleza vipi?JavaScript#performanceSenior
JavaScript inadhibiti vipi kumbukumbu na uvujaji (leaks) hutokeaje?JavaScript#performanceSenior
Kitengo cha next/image kinafanya nini?Next.js#performanceJunior
Tabaka gani za cache zilizopo katika Next.js?Next.js#performanceMiddle
Jinsi gani streaming SSR na Suspense inavyofanya kazi katika Next.js?Next.js#renderingSenior
Unaweza kuibua utendaji na Core Web Vitals katika Next.js vipi?Next.js#performanceSenior
Je, next/font inaongeza fonti vipi?Next.js#performanceMiddle
Partial Prerendering (PPR) ni nini?Next.js#renderingSenior
Jinsi komponentu za asynki zinavyowezesha upakiaji wenye kupanga awali (lazy loading)?Vue.js#performanceMiddle
Unawezaje kuongeza utendaji wa programu ya Vue?Vue.js#performanceSenior
Unawezaje kufanya lazy-loading ya njia/vipengele katika Angular?Angular#performanceMiddle
Je, change detection ya Angular hufanya kazi vipi, na OnPush hufanya nini?Angular#performanceSenior
Angular SSR (Universal) inatoa nini?Angular#renderingSenior
Zone.js ni nini na "zoneless" Angular inamaanisha nini?Angular#performanceSenior
Unawezaje kuzuia usasishaji wa state usisababishe re-renders nyingi kupita kiasi?State Management#performanceSenior
Unaongezaje caching katika NestJS?NestJS#performanceSenior
Unaboreshaje performance ya NestJS?NestJS#performanceSenior
GIL ni nini na inaathiri concurrency vipi?Python#concurrencySenior
Python husimamia vipi memory na garbage collection?Python#performanceSenior
Ni lini unachagua threading, multiprocessing, au asyncio?Python#concurrencySenior
Unafanyaje profiling na optimization ya utendaji wa Python?Python#performanceSenior
Kwa nini FastAPI ina kasi, na unaifanyaje ibaki hivyo?FastAPI#performanceSenior
select_related na prefetch_related zinaepukaje tatizo la N+1?Django#performanceMiddle
Django hutoa chaguzi gani za caching?Django#performanceSenior
Async support inafanyaje kazi katika Django ya kisasa?Django#performanceSenior
Unapanua vipi Django katika kiwango cha database?Django#performanceSenior
Go inasimamiaje kumbukumbu na garbage collection?Golang#performanceSenior
Unafanyaje profile na kuboresha utendaji wa Go?Golang#performanceSenior
JVM memory na garbage collection hufanya kazi vipi?Java#performanceSenior
Unaboresha vipi utendaji wa programu ya JVM?Java#performanceSenior
Unaboreshaje utendaji wa PHP (OPcache, JIT)?PHP#performanceSenior
Generators katika PHP ni nini na kwa nini kuzitumia?PHP#performanceSenior
Laravel hutoa caching gani?Laravel#performanceSenior
Unawezaje kurekebisha N+1 queries na kuboresha Eloquent?Laravel#performanceSenior
Unawezaje ku-deploy na kuboresha Laravel kwa production?Laravel#performanceSenior
Memory management na garbage collection hufanya kazi vipi katika .NET?C##performanceSenior
Span<T> na Memory<T> zinaboresha vipi utendaji?C##performanceSenior
Msimbo wa C# unatekelezwa vipi (IL, JIT, AOT)?C##performanceSenior
Boxing na unboxing ni nini, na kwa nini ni muhimu?C##performanceMiddle
Ruby inasimamiaje memory na garbage collection?Ruby#performanceSenior
Unawezaje kufanya profile na kuboresha utendaji wa Ruby?Ruby#performanceSenior
Kuganda (freezing) objects kunafanya nini na kwa nini kutumia frozen string literals?Ruby#performanceSenior
PostgreSQL inatoa aina gani za index?PostgreSQL#performanceMiddle
Unatumiaje EXPLAIN na EXPLAIN ANALYZE?PostgreSQL#performanceMiddle
Materialized views zinafanyaje kazi katika PostgreSQL?PostgreSQL#performanceMiddle
Table partitioning inafanyaje kazi katika PostgreSQL?PostgreSQL#performanceMiddle
Unawezaje kupakia data kwa wingi kwa ufanisi kwa kutumia COPY?PostgreSQL#performanceMiddle
VACUUM ni nini na kwa nini ni muhimu?PostgreSQL#performanceSenior
Kwa nini unahitaji connection pooling (PgBouncer)?PostgreSQL#performanceSenior
Unawezaje ku-tune performance ya PostgreSQL?PostgreSQL#performanceSenior
Indexes zinafanyaje kazi katika MongoDB?MongoDB#performanceMiddle
Unaboreshaje utendaji wa MongoDB?MongoDB#performanceSenior
Ni mikakati gani ya hali ya juu ya indexing ambayo MongoDB inaunga mkono?MongoDB#performanceSenior
Redis hutumikaje kama cache?Redis#performanceJunior
Mikakati na mifumo gani ya caching ipo na Redis?Redis#performanceMiddle
Redis inadaraje vipi kumbukumbu?Redis#performanceMiddle
Jinsi gani ya kuboreshwa utendaji wa Redis?Redis#performanceSenior
Ni nini changamoto za ugomvi wa cache?Redis#performanceSenior
Pipelining ni nini katika Redis na ni lini inapaswa kutumiwa?Redis#performanceMiddle
Kwa nini ujumlishaji wa uhusiano (connection pooling) umuhimu sana wakati wa kutumia Redis?Redis#performanceMiddle
Caching inafanya kazi vipi kwenye AWS (ElastiCache)?Cloud & AWS#performanceMiddle
Ukurasa wa wavuti au API ni pole pole — unajua jinsi gani ya kupata sababu?Site Reliability & Operations#performanceMiddle
Unajinasaje query ya utendaji wa haraka katika hifadhidata?Site Reliability & Operations#databaseMiddle
Je, unajuaje kama kizuizi ni CPU, kumbukumbu, I/O, au mtandao?Site Reliability & Operations#performanceMiddle
Je, ungetulia jinsi gani tovuti ya WordPress iliyo na wastani wa juu wa kutembelea kwa ajili ya utendaji?Site Reliability & Operations#wordpressSenior
Kuna cache layers nini katika web stack ya kawaida?Site Reliability & Operations#cachingMiddle
Unawezaje kuamua kile kinachobaki cached na kwa muda gani (TTL)?Site Reliability & Operations#cachingMiddle
Stampede ya cache ni nini na unaiwindisha vipi?Site Reliability & Operations#cachingMiddle