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