Good morning! Today’s topic is resilience — how systems (and teams) keep working when something breaks. Whether you’re explaining a circuit breaker in a design review or reassuring a stakeholder after an outage, this vocabulary will help you sound calm and precise under pressure.

📖 Word of the Day: Resilient

  • Word: resilient
  • IPA: /rɪˈzɪl.i.ənt/
  • Vietnamese meaning: có khả năng phục hồi nhanh, chịu được sự cố mà không sụp đổ hoàn toàn
  • Example sentences:
    1. “We redesigned the payment service to be more resilient to downstream failures.”
    2. “A resilient architecture assumes things will fail and plans for it.”
    3. “Our on-call rotation made the team more resilient during the incident.”

Listen and practice pronunciation:

Vocabulary Table — Resilience & Fault Tolerance

PhraseVietnameseExample
Circuit breakercầu dao ngắt mạch tự động khi phát hiện lỗi liên tục”The circuit breaker trips after five failed calls to protect the downstream service.”
Retry with backoffthử lại với thời gian chờ tăng dần”We retry with exponential backoff instead of hammering the API immediately.”
Failoverchuyển đổi sang hệ thống dự phòng khi cái chính gặp sự cố”Traffic automatically fails over to the secondary region.”
Redundancydự phòng, có nhiều bản sao để tránh điểm lỗi duy nhất”We added redundancy so a single server crash doesn’t take down the whole service.”
Graceful degradationsuy giảm có kiểm soát, vẫn hoạt động một phần thay vì sập hoàn toàn”Under heavy load, the site degrades gracefully by disabling recommendations first.”

🗣 Pronunciation Guide

“Resilient” breakdown — /rɪˈzɪl.i.ənt/:

  • Stress on the second syllable: re-ZIL-i-ent, not RES-i-lient
  • “-zil-” rhymes with “will”
  • The ending “-ient” is soft and quick: “-yent”

Practice sentence (read aloud 3x):

“A resilient system uses redundancy and failover so it can weather the storm during an outage.”

Notice how “resilient,” “redundancy,” and “failover” naturally stack together — that’s exactly how you’d describe a real architecture decision in a design review.

✍️ Exercise 1: Fill in the Blank

Fill each blank with one phrase from today’s list: circuit breaker, retry with backoff, failover, redundancy, graceful degradation.

  1. “We built in _______ across three availability zones so no single data center failure takes us down.”
  2. “Instead of retrying instantly, we now _______ to avoid overwhelming the struggling service.”
  3. “The _______ opened automatically once error rates crossed 50%.”
  4. “When the recommendation engine is slow, the homepage falls back to _______ and just hides that section.”
  5. “During the regional outage, we triggered a manual _______ to the backup cluster.”
Show answers
  1. redundancy
  2. retry with backoff
  3. circuit breaker
  4. graceful degradation
  5. failover

✍️ Exercise 2: Translate to English

Translate these Vietnamese sentences using today’s vocabulary.

  1. “Chúng tôi đã thêm cầu dao ngắt mạch để bảo vệ dịch vụ downstream.”
  2. “Hệ thống cần có khả năng phục hồi tốt hơn trước các sự cố mạng.”
  3. “Nếu server chính gặp sự cố, lưu lượng sẽ tự động chuyển sang server dự phòng.”
Show answers
  1. “We added a circuit breaker to protect the downstream service.”
  2. “The system needs to be more resilient to network failures.”
  3. “If the primary server fails, traffic automatically fails over to the backup.”

💬 Idiom of the Day: “Weather the storm”

  • Vietnamese meaning: vượt qua giai đoạn khó khăn, chịu đựng và tồn tại qua sự cố
  • Example 1: “Thanks to the redundancy we built in last quarter, we weathered the storm during yesterday’s outage.”
  • Example 2: “Every growing team has to weather a few storms — what matters is how quickly you recover.”

📺 Recommended Watching

🎯 Daily Challenge

Describe one resilience decision from a project you’ve worked on (a retry policy, a failover setup, a redundant queue) in a single sentence using “resilient” or “weather the storm.” Say it out loud three times — that’s your answer ready for the next design review.

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