#TTL

CamaraGurucameraguru
2025-12-20

πŸ“Έ Worstelde jij ook met je flitsinstellingen tijdens cruciale momenten? Ontdek hoe TTL-flitsen je fotoleven kan veranderen - mijn persoonlijke ervaring en praktische tips in een nieuw artikel! cameraguru.nl/fotografietips-e

2025-10-16

[ΠŸΠ΅Ρ€Π΅Π²ΠΎΠ΄] 150 ΠΌΠ»Π½ Ρ‡Ρ‚Π΅Π½ΠΈΠΉ/с: ΠΊΠ°ΠΊ Uber усилил ΠΊΠΎΠ½ΡΠΈΡΡ‚Π΅Π½Ρ‚Π½ΠΎΡΡ‚ΡŒ кэша

150 ΠΌΠ»Π½ Ρ‡Ρ‚Π΅Π½ΠΈΠΉ Π² сСкунду β€” ΠΈΡ‚ΠΎΠ³ скрупулёзной ΠΈΠ½ΠΆΠ΅Π½Π΅Ρ€ΠΈΠΈ кэша. Π’ этом кСйсС Uber β€” ΠΊΠ°ΠΊ ΡƒΠΆΠ΅ΡΡ‚ΠΎΡ‡ΠΈΡ‚ΡŒ ΠΊΠΎΠ½ΡΠΈΡΡ‚Π΅Π½Ρ‚Π½ΠΎΡΡ‚ΡŒ Π±Π΅Π· ΡƒΠ΄ΡƒΡˆΠ΅Π½ΠΈΡ записи: инвалидация Β«ΠΏΠΎ ΠΏΡƒΡ‚ΠΈ записи» ΠΈΠ· слоя запросов, дСдупликация ΠΏΠΎ commit-timestamp ΠΈΠ· Π‘Π”, сочСтаниС TTL ΠΈ CDC Π½Π° Π±ΠΈΠ½Π»ΠΎΠ³Π°Ρ…, плюс ΠΈΠ·ΠΌΠ΅Ρ€Π΅Π½ΠΈΠ΅ «чСрствости» Ρ‡Π΅Ρ€Π΅Π· Cache Inspector. Π Π°Π·ΠΎΠ±Ρ€Π°Π½Ρ‹ Ρ€Π΅Π°Π»ΡŒΠ½Ρ‹Π΅ источники stale-Π΄Π°Π½Π½Ρ‹Ρ… (Π»Π°Π³ CDC, Ρ€Π΅ΠΏΠ»ΠΈΠΊΠΈ, Π½Π΅Π³Π°Ρ‚ΠΈΠ²Π½ΠΎΠ΅ ΠΊΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅) ΠΈ компромиссы Π²Ρ€ΠΎΠ΄Π΅ read-your-writes β€” с практичСскими схСмами, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΠ°ΡΡˆΡ‚Π°Π±ΠΈΡ€ΡƒΡŽΡ‚ΡΡ Π΄ΠΎ сотСн ΠΌΠΈΠ»Π»ΠΈΠΎΠ½ΠΎΠ² RPS. Π§ΠΈΡ‚Π°Ρ‚ΡŒ кСйс

habr.com/ru/companies/otus/art

#ΠΊΠΎΠ½ΡΠΈΡΡ‚Π΅Π½Ρ‚Π½ΠΎΡΡ‚ΡŒ_кэша #инвалидизация_кэша #Redis #TTL #CDC #конСчная_ΡΠΎΠ³Π»Π°ΡΠΎΠ²Π°Π½Π½ΠΎΡΡ‚ΡŒ #ΡˆΠ°Ρ€Π΄ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅

Unofficial PetaPixel BotPetaPixel@toot.earth
2025-10-08
2025-09-26

[ΠŸΠ΅Ρ€Π΅Π²ΠΎΠ΄] ΠšΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Π² Go: ускоряСм API Π±Π΅Π· Redis

Команда Go for Devs ΠΏΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²ΠΈΠ»Π° ΠΏΠ΅Ρ€Π΅Π²ΠΎΠ΄ ΡΡ‚Π°Ρ‚ΡŒΠΈ ΠΎ Ρ‚ΠΎΠΌ, ΠΊΠ°ΠΊ ΠΊΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΠΌΠΎΠ³Π°Π΅Ρ‚ ΡƒΡΠΊΠΎΡ€ΠΈΡ‚ΡŒ API Π½Π° Go ΠΈ ΡΠ½ΠΈΠ·ΠΈΡ‚ΡŒ Π½Π°Π³Ρ€ΡƒΠ·ΠΊΡƒ Π½Π° Π±Π°Π·Ρƒ Π΄Π°Π½Π½Ρ‹Ρ…. Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ Ρ€Π°Π·Π±ΠΈΡ€Π°ΡŽΡ‚ΡΡ основныС стратСгии ΠΊΡΡˆΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡ β€” ΠΎΡ‚ Write-Through Π΄ΠΎ Write-Back β€” ΠΈ ΠΏΠΎΠΊΠ°Π·Π°Π½ ΠΏΡ€ΠΈΠΌΠ΅Ρ€ Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ кэша с TTL Π½Π° чистом Go. ΠžΡ‚Π»ΠΈΡ‡Π½Ρ‹ΠΉ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π», Ссли Ρ…ΠΎΡ‚ΠΈΡ‚Π΅ ΡƒΡΠΊΠΎΡ€ΠΈΡ‚ΡŒ свой сСрвис Π±Π΅Π· ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄Π° Π½Π° Redis.

habr.com/ru/articles/948866/

#Go #Golang_API #cache #caching #WriteThrough #WriteBack #TTL #Redis #LRU #lfu

Some more adventures in #selfhosting! The #pixelfed instance was down again, but with all services running just fine. It turns out the issue was that at some point there was a reason for the app to return 404 errors and those responses got cached by #cloudflare. The solution was a cache purge and to add status code filters to not cache 404 responses.

#ttl #cache #feviderse #programming #keyboardvagabond

screenshot of status code ttl with 404 set to no cache
2025-09-25

Done with this project, everything except for the audio port worked (not a huge issue, but annoying). Passed in CGA via the DB-9 connector, RGB via the BNC connectors and the Sony PVM was more than happy to display the signal.

#electronics #cmptr #rgb #ttl #cga #retrogaming

The CMPTR breakout board fully assembled with RGBS BNC connectors, a DB9 port for CGA, and more than a couple of DIP switches for settings.
Hacker Newsh4ckernews
2025-09-21
Bits&Terminal Jeffjf_718@oldbytes.space
2025-08-06

Does anyone know a good resource to learn about flyback transformers used in MDA TTL monitors and monochrome composite monitors from the early to mid-80s?

#retroComputing #MonochromeDisplayAdapter #CRT #flyback #TTL

2025-06-30

🌐 What is TTL Records(Time-to-Live)? ⏱️. Why is it crucial for efficient web performance? Dive into the world of DNS with this explaination of what TTL is, how it works in DNS records.
#DNS #TTL #Networking #WebPerformance #TimeToLive #Caching
Full video here πŸ‘‰ youtu.be/lZXu5ymxeks

2025-06-01

This is the lens I shot a roll (of 120) on, a Carl #Zeiss Jena DDR f2.8 80mm lens. Till now I been shooting, like, Dianas & #Holgas, or my plastic TLR (waist viewfinder; I struggle), a folding viewfinder one…
This is a proper #SLR & I also got a #TTL viewfinder, hope it works!
#analogue #photography #medium #format #big #heavy #camera #long #lens #tripod #light #meter #depth of #field #bokeh #background #selfie #timer #broken #PentaconSix #body #viewfinder #portrait #landscape #square #pictures

The large, medium format Pentacon Six camera and SLR viewfinder (they’re removable) is seen with the standard lens, in this case 80mm focal length. A yellow retractable ruler shows several inches. The camera sits on a brown suitcase.The 80mm Zeiss lens is seen facing the camera. The face of the large, medium format Pentacon Six is seen in front of the same brown suitcase. The name is seen, β€œPentacon six TL” (for through the lens).

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