W Geng gengwg

Core Principles for Scaling Systems

Embrace Failure as Inevitable
- Design for graceful degradation, automatic recovery, and chaos testing.
- Example: "Like brushing your teeth" – build resilience into daily workflows.
Simplify to Scale
- Zoom out: Prioritize high-impact components.
- Declutter services: Eliminate redundant systems to reduce failure points.
Co-Design Physics and Software

Sharing as a data point for people who are going through the same experience/curious what it's like.

Timeline:

google

Aug 9 - Got a calendar event titled "ER Connect". This was where they mentioned that I had to choose between PIP or Severance.
Aug 11 - Deadline for signing Acceptance. Signed and accepted the package a few minutes before the deadline.
Aug 19 - Official last day of work. Lose access to workplace, email, office buildings.

Here's how to undo your last commit (that accidentally included __pycache__) and prevent it from being tracked in the future:

1. Undo the Last Commit (But Keep Changes)

git reset --soft HEAD~1

This will:
- Remove the commit (fd8b15c)

Open VS Code Keyboard Shortcuts
- Press Ctrl + K then Ctrl + S (Windows/Linux)
- OR Cmd + K then Cmd + S (Mac)
  (This opens the keyboard shortcuts editor.)
Search for the Python Run Command
- Type in the search bar:
```
Python: Run Python File in Terminal
```

Here’s a clear breakdown of the differences between index funds and ETFs (even when tracking the same stocks), along with guidance on choosing the best option for your goals:

Key Differences

Feature	Index Fund (Mutual Fund)	ETF (Exchange-Traded Fund)
Trading	Priced once daily (after market close).	Traded like stocks (intraday pricing).
Minimum Investment	Often requires $1k–$3k initial buy-in.	Buy any number of shares (no minimum).
Expense Ratios	Slightly higher (e.g., 0.04–0.15%).	Often lower (e.g., 0.03–0.10%).

For a 40–50-year-old investor with a moderate risk tolerance and a focus on balanced growth and capital preservation, here’s a recommended portfolio allocation using your selected funds:

Suggested Allocation

Asset Class	Fund(s)	Percentage	Rationale
Domestic Stocks	VTI	40%	Core U.S. equity exposure for growth and diversification.
International Stocks	FZILX	20%	Diversifies globally, capturing growth in developed/emerging markets.
Broad Bonds	BND	30%	Stabilizes the portfolio with investment-grade U.S. bonds (mix of durations).

To add another person as an editor to your YouTube channel, follow these steps:

Via YouTube Studio (Standard Channel):

Sign in to YouTube Studio:
- Go to YouTube Studio and sign in with your Google account.
Navigate to Settings:
- Click the Settings icon (⚙) in the left sidebar.
Open Permissions:

	JP MORGAN
	- trader hdedge
	- quant research
	software developer

	1. large book index words/pages
	- indexs wors page # increasing order
	O(N)
	Sorting (ONlgN)
	list scan pages no need to sort-

	Software Engineer Career Ladder at Google

	Here’s an understanding of the software engineer career ladder at Google:
	Software Engineer I (Level 2)

	SWE-I refers to a fresh out of college software engineer or an intern still pursuing a four-year bachelor’s degree in an engineering program.
	Software Engineer II (Level 3)

	Google entry-level software engineer is a designated Level 3 coding engineer with an undergraduate degree in a computer-related field. It is also common for an SWE-II to have a Master’s degree. However, since they possess 0 to 1 year of industry experience, they are assigned an entry-level position. On average, they earn a base salary of $130,041 per year.
	Software Engineer III (Level 4)

	388 Longest Absolute File Path 34.7% Medium
	340 Longest Substring with At Most K Distinct Characters 38.5% Hard
	308 Range Sum Query 2D - Mutable 19.8% Hard
	418 Sentence Screen Fitting 27.2% Medium
	361 Bomb Enemy 38.0% Medium
	281 Zigzag Iterator 48.3% Medium
	298 Binary Tree Longest Consecutive Sequence 39.8% Medium
	425 Word Squares 41.7% Hard
	346 Moving Average from Data Stream 57.4% Easy
	163 Missing Ranges 27.7% Medium