🌅 Wednesday Morning — System Architecture English
Good morning! Today we explore the language of System Architecture and Cloud Design — the vocabulary that senior engineers, tech leads, and solution architects use every day. Whether you’re in a design review, writing an RFC, or interviewing for a senior role, this language will help you communicate with clarity and confidence.
🔤 Word of the Day: Scalability
| Word | scalability |
| IPA | /ˌskeɪ.ləˈbɪl.ɪ.ti/ |
| Part of Speech | noun |
| Vietnamese | khả năng mở rộng quy mô |
📖 What does it mean in architecture?
Scalability is the ability of a system to handle increased workload — more users, more data, more requests — by adding resources, either vertically (more powerful hardware) or horizontally (more instances/nodes). A scalable system grows gracefully without needing a full redesign.
🔑 Two key types:
- Vertical scaling (scale up) — upgrade CPU/RAM on existing servers
- Horizontal scaling (scale out) — add more servers/replicas
✅ Example Sentences
- “One of the core requirements for this system is scalability — we expect 10x traffic growth over the next 18 months.”
- “The monolith has poor scalability because the entire application must be deployed as a single unit.”
- “By moving to a microservices architecture, we significantly improved the scalability of each individual service.”
🔗 Resources
- 📖 Cambridge Dictionary: scalability
- 🎧 YouGlish (hear native speakers): scalability on YouGlish
- 📺 ByteByteGo – System Design basics: https://www.youtube.com/@ByteByteGo
📋 Vocabulary Table: System Architecture Essentials
| Phrase | Vietnamese | Example Sentence |
|---|---|---|
| fault tolerance | khả năng chịu lỗi | ”We designed the system for fault tolerance — a single node failure won’t take down the whole cluster.” |
| load balancer | bộ cân bằng tải | ”The load balancer distributes incoming requests evenly across all healthy instances.” |
| bottleneck | điểm nghẽn cổ chai | ”Profiling revealed that the database was the main bottleneck under high concurrency.” |
| service mesh | lưới dịch vụ | ”We adopted a service mesh to handle service-to-service authentication and observability at scale.” |
| eventual consistency | nhất quán dần dần | ”In a distributed system, we accept eventual consistency to gain higher availability.” |
🗣️ Pronunciation Guide
Breaking Down “Scalability”
Let’s go syllable by syllable:
sca - la - bil - i - ty
/skeɪ/ - /lə/ - /bɪl/ - /ɪ/ - /ti/- sca → sounds like “SKAY” (rhymes with “day”)
- la → short, unstressed → “luh”
- bil → like “bill” (the bird 🦆)
- i → short “ih”
- ty → like “tee”
🎯 Full word stress lands on -bil-: ska-lə-BIL-ɪ-tee
🔊 Practice Sentence — Read Aloud 3 Times
“Our new microservices architecture dramatically improves scalability, but we need to address fault tolerance before the production launch.”
Tips as you read:
- Stress -BIL- in scalability
- Stress FAULT in fault tolerance
- Use a confident, measured pace — this is meeting-room English!
✏️ Exercise 1: Fill in the Blank
Choose the correct word: bottleneck / load balancer / scalability / fault tolerance / eventual consistency
- The team decided to put a ________ in front of the API servers to distribute traffic evenly.
- After the incident, we added redundant nodes to improve ________ — no single point of failure should crash the service.
- As the app’s user base grows, ________ becomes the most critical non-functional requirement.
- The slow database query was the ________ causing timeouts across multiple services.
- In our distributed cache, we chose ________ because strong consistency would hurt write performance too much.
✅ Click to reveal answers
- load balancer
- fault tolerance
- scalability
- bottleneck
- eventual consistency
✏️ Exercise 2: Translate into English
Translate these sentences from Vietnamese to English, using today’s vocabulary:
- “Kiến trúc monolith của chúng ta đang trở thành điểm nghẽn cổ chai khi lưu lượng tăng.”
- “Chúng ta cần thiết kế hệ thống với khả năng chịu lỗi tốt hơn trước khi ra mắt.”
- “Bộ cân bằng tải sẽ phân phối các request đến tất cả các instance đang hoạt động.”
✅ Click to reveal sample answers
- “Our monolith architecture is becoming a bottleneck as traffic increases.”
- “We need to design the system with better fault tolerance before the launch.”
- “The load balancer will distribute requests across all active instances.”
💡 Your wording may differ — focus on using the vocabulary naturally!
💡 Idiom of the Day: “Put all your eggs in one basket”
| Idiom | put all your eggs in one basket |
| Vietnamese | bỏ tất cả trứng vào một giỏ (không nên đặt cược tất cả vào một thứ) |
| In architecture | Relying on a single server, region, or vendor with no redundancy |
Examples in Context
- “Hosting everything in a single availability zone is like putting all your eggs in one basket — one outage and you’re down completely.”
- “We diversified our cloud provider strategy because we didn’t want to put all our eggs in one basket with a single vendor.”
📺 Recommended Watching
Level up your architecture English with these channels:
| Channel | Why Watch | Link |
|---|---|---|
| ByteByteGo | Visual system design explanations — great vocabulary in context | youtube.com/@ByteByteGo |
| Fireship | Fast-paced, modern takes on cloud and architecture concepts | youtube.com/@Fireship |
| Tech With Tim | Cloud architecture tutorials with clear English explanations | youtube.com/@TechWithTim |
🎯 Tip: Watch 1 ByteByteGo video today and write down 3 new architecture terms you hear. Look them up in Cambridge Dictionary!
🏋️ Today’s Challenge
One tiny action to practice right now:
📝 Open your notes app and write 2 sentences describing a system you’re currently building or have worked on — using at least 2 words from today’s vocabulary table.
Example: “The current API has a scalability problem because it’s hosted on a single server without a load balancer.”
Share it with a teammate or your tech lead in your next standup. Speaking architecture English in real meetings is the fastest way to improve! 🚀
📊 Today’s Summary
| Item | Details |
|---|---|
| 🔤 Word of the Day | scalability /ˌskeɪ.ləˈbɪl.ɪ.ti/ |
| 📋 Vocabulary | fault tolerance, load balancer, bottleneck, service mesh, eventual consistency |
| 💡 Idiom | ”put all your eggs in one basket” |
| 🗣️ Practice Sentence | microservices / scalability / fault tolerance |
| ⏱ Estimated Time | ~20 minutes |
Keep building — in code and in English! See you at the noon session. 🌤️