Sunday, December 10, 2023


  1. Atlanta, Georgia
  2. Tempe, Arizona
  3. Kirkland, Washington
  4. Raleigh, North Carolina
  5. Rogers Park (Chicago), Illinois
  6. Columbia, Maryland
  7. Somerville, Massachusetts
  8. Ann Arbor, Michigan
  9. Tampa, Florida
  10. Jersey City, New Jersey
  11. Boise, Idaho
  12. Chapel Hill, North Carolina
  13. Irvine, California
  14. Fort Lee, New Jersey
  15. Arlington, Virginia
  16. Naperville, Illinois
  17. Milton, Massachusetts
  18. Fremont, California
  19. Carmel, Indiana
  20. Rockville, Maryland
  21. Franklin, Tennessee
  22. San Diego, California
  23. Hillsboro, Oregon
  24. Abington, Pennsylvania
  25. San Jose, California
  26. Alexandria, Virginia
  27. Chanhassen, Minnesota
  28. Denver, Colorado
  29. Overland Park, Kansas
  30. Morristown, New Jersey
  31. Lafayette, Colorado
  32. Camas, Washington
  33. Alamonte Springs, Florida
  34. South Burlington, Vermont
  35. Marietta, Georgia
  36. Kirkwood, Missouri
  37. Glen Cove, New York
  38. Kaneohe, Hawaii
  39. Hutto, Texas
  40. Madison, Wisconsin
  41. Salt Lake City, Utah
  42. Bentonville, Arkansas
  43. Sarasota, Florida
  44. Nashua, New Hampshire
  45. Norman, Oklahoma
  46. Greenville, South Carolina
  47. Juneau, Alaska
  48. Coralville, Iowa
  49. Jeffersonville, Indiana
  50. Sparks, Nevada

Saturday, April 22, 2023

FDIC insurance per account limit

SVB crash in 2023 triggered me to research how FDIC insurance works. 

Federal Deposit Insurance Corporation (FDIC), a body that underwrites most private bank deposits. Federal deposit insurance goes to the heart of the FDIC’s mission: to promote confidence and stability in the nation’s financial system. FDIC deposit insurance enables consumers to confidently place their money at thousands of FDIC-insured banks across the country, and is backed by the full faith and credit of the United States government. Since the founding of the Federal Deposit Insurance Corporation in 1933 no depositor has lost a penny of FDIC-insured funds.

The standard deposit insurance amount is $250,000 per depositor, per insured bank, for each account ownership category.

The following ownership categories are covered by the FDIC:

  1. Single accounts
  2. Joint accounts
  3. Certain retirement accounts, including IRAs
  4. Revocable trust accounts
  5. Irrevocable trust accounts
  6. Corporation, partnership, and unincorporated association accounts
  7. Employee benefit plan accounts
  8. Government accounts

FDIC insurance allows account holders to designate up to six beneficiaries who will each receive equal shares upon the account holder's passing. Each beneficiary is eligible for up to $250,000 in FDIC coverage per account owner. By setting up beneficiaries on an account, the account holder can increase their FDIC coverage. Qualifying beneficiaries for FDIC coverage include the account owner’s spouse, children, grandchildren, parents, and siblings. (This requirement might have changed)

The owner names five unique eligible beneficiaries and the total deposit(s) allocated to all beneficiaries combined is $1,250,000.

Two ways to do this:

1) Instead of equally dividing the money between beneficiaries in that bank account, you can choose a custom allocation. For example, you can leave 99.6% to one beneficiary and 0.1% to each of four beneficiaries. Those other four beneficiaries could be friends or charities.

2) Sets up 5 accounts (CDs for example) at the bank. The first CD has a balance of $1,249,600 with his wife as a beneficiary. The other 4 CDs have balances of only $100 each, and each has a separate beneficiary. The output of the EDIE calculator which shows that all $1.25 million is insured.

Monday, March 20, 2023

2023 World's happiest countries

1. Finland
2. Denmark
3. Iceland
4. Israel
5. Netherlands
6. Sweden
7. Norway
8. Switzerland
9. Luxembourg
10. New Zealand
11. Austria
12. Australia
13. Canada
14. Ireland
15. United States
16. Germany
17. Belgium
18. Czech Republic
19. United Kingdom
20. Lithuania

Saturday, March 11, 2023


We are doing service maturity audit now, and more often than not the team gets confused about these three acronyms, so I want to quickly review here.

An SLA (service level agreement) is an agreement between service provider and customers about measurable metrics like uptime, performance, QoS, responsiveness, and responsibilities. It’s always better to under-promise and over-deliver the agreement.

An SLO (service level objective) is an agreement within an SLA about a specific metric like uptime or response time. Commit to as few SLOs as possible and focus on the ones that matter most to customers.

An SLI (service level indicator) measures compliance with an SLO (service level objective). To stay in compliance with your SLA, the SLI will need to meet or exceed the promises made in that document. Choose which metrics actually matter to your core SLOs and put your energy into tracking those critical metrics effectively.

For service reliability and availability, build disaster recovery plan and an error budget is very important. Leaving room for failures not only protects the business from SLA violations, but also has the space to try innovative new solutions that might fail. However, production is production, every second matters when service is down. We need to design for failure and plan for failure in service development and operations.

Sunday, January 29, 2023

Live site culture

Live site culture is the focus of an organization to prioritize the experience and reliability of the live site over everything else. A live-site culture promotes the idea that anything that happens in the production environment takes precedence over anything else. Next, anything that threatens production, is about to go to production, or hinders going to production at any time gets priority. Only when these are all in order is the attention shifted to future work.

  • Live site first
  • Control exposure through feature flags
  • Make vulnerabilities real and personal
  • Engineering is more than an ops partner
  • Production telemetry is the heartbeat of your service
  • Make alerts actionable

Monday, January 2, 2023

California National Parks Free Entrance

Come experience the national parks! On five days in 2023, all National Park Service sites that charge an entrance fee will offer free admission to everyone. Mark your calendar for these entrance fee–free dates in 2023:

优胜美地国家公园(Yosemite National Park)
死亡谷国家公园(Death Valley National Park)
约书亚树国家公园(Joshua Tree National Park)
旧金山国立海事历史公园(San Francisco Maritime National Historical Park)
威思基镇国家休闲区(Whiskeytown National Recreation Area)
美洲杉和国王峡谷国家公园(Sequoia & Kings Canyon National Parks)
穆尔森林国家纪念地(Muir Woods National Monument)
火山岩床国家保护区(Lava Beds National Monument)
拉森火山国家公园(Lassen Volcanic National Park)
卡布里约国家纪念区 (Cabrillo National Monument)
石峰国家公园(Pinnacles National Park)