Hacker News: jaysoncena

New comment by jaysoncena in "A Graphical Introduction to Lattices"

jaysoncena — Thu, 18 Jun 2020 13:28:16 +0000

Can you expand more on "are made up of the semilattices over a monotonic operation"?

New comment by jaysoncena in "Understanding x86 machine code to assembly"

jaysoncena — Sat, 09 Feb 2019 14:52:05 +0000

I'm currently working on my homework on one of my module (CS5250 Advanced Operating Systems) and I find this site very easy to understand compared to the slides + discussion by my professor. I'm not saying that my professor is not that good, its just that the way information are laid out on this site is very easy to follow.

Anyway, does anyone have any other sites that they can recommend? (not the Intel one. just knowing that it has 4.7k pages makes me not go near it)

Understanding x86 machine code to assembly

jaysoncena — Sat, 09 Feb 2019 14:47:09 +0000

Article URL: http://www.c-jump.com/CIS77/CPU/x86/lecture.html

Comments URL: https://news.ycombinator.com/item?id=19122515

Points: 17

# Comments: 3

New comment by jaysoncena in "Taiwan ban single-use plastic straws, plastic bags, disposable utensils by 2030"

jaysoncena — Thu, 22 Feb 2018 15:42:34 +0000

At least major cities and provinces in Philippines started banning plastic bags, styrofoams and disposable, plastic utensils since 2012

http://plasticbagbanreport.com/category/world-news/philippin...

New comment by jaysoncena in "MyRocks – A RocksDB storage engine with MySQL"

jaysoncena — Sun, 03 Dec 2017 01:35:23 +0000

Can you give more context?

New comment by jaysoncena in "Filing Taxes in Japan Is a Breeze. Why Not in the US?"

jaysoncena — Sat, 15 Apr 2017 00:44:37 +0000

I'm not sure how easy it is in Japan but in Singapore, It just took me 10-15 mins to file my tax. 1. Login to IRAS(tax bureau) portal using the national ID (for me as foreigner, I used my employment pass ID) 2. Open the page for filing income tax 3. I entered total annual salary and allowances 4. I have donated to a government-recognized charity and this is automatically reflected on the form. It seems that the charity uploads donation infos to IRAS 5. Check if the tax relief for having a child is there 6. Click submit 7. Review and re-submit

You also have an option to do installment, deducting from your bank account monthly.

I don't have any other source of income so it will be different for other people.

New comment by jaysoncena in "Ask HN: Do you still use browser bookmarks?"

jaysoncena — Sat, 08 Apr 2017 05:00:58 +0000

I'm also doing the same thing. I add #hashtag to add keywords that are not on the title of the bookmark.

New comment by jaysoncena in "StarCraft: Remastered to be released Summer 2017"

jaysoncena — Sun, 26 Mar 2017 13:18:43 +0000

They should release a mobile version as well. I think that will be a hit.

New comment by jaysoncena in "Scaling Financial Reporting at Airbnb"

jaysoncena — Fri, 17 Mar 2017 01:10:29 +0000

This new system that uses events looks more flexible since it is decoupled on the application logic. I think the downside with this one is that the new system has a lot of moving parts. Also, changes in logic/new events must be communicated and should be supported before the main app is put into production.

New comment by jaysoncena in "Freenom World – A fast and anonymous Public DNS resolver"

jaysoncena — Fri, 13 Jan 2017 22:45:36 +0000

From Singapore

  ~188ms -> dig yahoo.com @80.80.80.80
  ~3ms -> dig yahoo.com @8.8.8.8
  ~2ms -> dig yahoo.com @(ISP's DNS)

MTR to Google DNS

  $ mtr -wrc10 8.8.8.8
  Start: Fri Jan 13 22:22:56 2017
  HOST: -                            Loss%   Snt   Last   Avg  Best  Wrst StDev
    1.|-- My PublicIP gateway           0.0%    10    1.9  11.3   1.3  22.5   6.5
    2.|-- Singapore1.vqbn.com           0.0%    10    1.3   4.0   0.9  28.3   8.5
    3.|-- 132.147.112.194               0.0%    10    2.6   1.6   1.0   3.3   0.7
    4.|-- 108.170.240.173               0.0%    10    1.7   1.8   1.6   2.3   0.0
    5.|-- 209.85.243.215                0.0%    10    1.5   1.8   1.5   2.0   0.0
    6.|-- 216.239.48.73                 0.0%    10    2.0   2.0   1.8   2.2   0.0
    7.|-- ???                          100.0    10    0.0   0.0   0.0   0.0   0.0

MTR to Freenom DNS

    $ mtr -wrc10 80.80.80.80
    Start: Fri Jan 13 22:37:58 2017
    HOST: -                                 Loss%   Snt   Last   Avg  Best  Wrst StDev
      1.|-- My PublicIP gateway                0.0%    10    0.9   8.2   0.8  56.9  17.8
      2.|-- amsterdam1.vqbn.com                0.0%    10  187.3 187.2 186.9 187.8   0.0
      3.|-- br1.ams-ix.dc2.ams.denit.net       0.0%    10  198.7 191.9 187.7 199.2   4.6
      4.|-- 62-148-189-36-hosted-by.denit.net  0.0%    10  187.9 189.6 187.9 199.2   3.5
      5.|-- 80.80.80.80                        0.0%    10  187.9 188.1 187.9 188.5   0.0

New comment by jaysoncena in "DynamoDB cannot store empty strings"

jaysoncena — Wed, 14 Dec 2016 10:04:43 +0000

In my previous team, we instead use the string "null" to represent NULL. Its pretty dumb but we haven't thought of any other way.

What I like about DynamoDB is that you can scale the table easily. You don't need a dedicated DBA to maintain your database.

For what I don't like

1. You pay for what IOPS you allocated 2. You can't share free IOPS to other tables 3. Getting a snapshot of the whole DB is impossible, DB backups are not transactional 4. Use EMR or DataPipeline for backups 5. If you reach your IOPS limit, you need to retry your writes/updates instead of delayed ack's. Others uses libraries that limits writes but its per server and doesn't account the free writes on other servers since the accounting is on the client level

Ultimate DB Heresy: Single Writing DB Connection

jaysoncena — Wed, 23 Nov 2016 06:27:14 +0000

Article URL: http://ithare.com/ultimate-db-heresy-single-writing-db-connection-part-ii-gradual-scalability-all-the-way-from-no-scale-to-perfect-scale/

Comments URL: https://news.ycombinator.com/item?id=13020544

Points: 1

# Comments: 0

New comment by jaysoncena in "Moving from Native Apps to Progressive Web Apps"

jaysoncena — Sun, 13 Nov 2016 13:33:39 +0000

He's probably referring to QT5. If you're a for-profit business and using QT, most likely your software is closed-sourced which requires a commercial license.

I've worked with a team who develops a windows app which still uses QT4. They cannot migrate to QT5 since it requires a commercial license.

New comment by jaysoncena in "Dropbox’s Exodus from the Amazon Cloud"

jaysoncena — Tue, 15 Mar 2016 06:41:35 +0000

There's already a Cloud over IP! My brain melt down trying to understand what that means.

I hope there will be no "IoT over IP"

New comment by jaysoncena in "Dropbox’s Exodus from the Amazon Cloud"

jaysoncena — Tue, 15 Mar 2016 06:29:12 +0000

this is really cool! Can you give more details on how blocks, replications, metadata, etc. are being handled?

New comment by jaysoncena in "Source: Microsoft mulled an $8B bid for Slack, will focus on Skype instead"

jaysoncena — Sat, 05 Mar 2016 00:39:33 +0000

It would be really cool if they can make Skype easier for app integration similar to Slack. Also, if they can update their Linux client.

Anyone tried running Skype for windows on wine?

New comment by jaysoncena in "Source: Microsoft mulled an $8B bid for Slack, will focus on Skype instead"

jaysoncena — Sat, 05 Mar 2016 00:35:04 +0000

As much as I do hate Lync, the only thing that I remember that is good on it is the message archive that you can find under the "Conversation History" folder in Outlook.

New comment by jaysoncena in "Source: Microsoft mulled an $8B bid for Slack, will focus on Skype instead"

jaysoncena — Sat, 05 Mar 2016 00:31:04 +0000

My experience with Lync is different. My current employer is a windows shop and uses Lync for communication.

What I don't like with Lync 1. Screen sharing sucks. Its slow. Is it possible for them to use a technology similar to FreeNX? 2. Does not support multiple-client notification. I use multiple desktop and when you are logged on multiple Lync clients, messages will only go to a single client! 3. OSX client always crashes

What I don't like with Slack 1. Cool UX but sometimes the UI hangs and shows only a white, blank space

New comment by jaysoncena in "Dissolving the Dead"

jaysoncena — Mon, 29 Feb 2016 01:13:13 +0000

Isn't this similar to what cartels does to dispose bodies?

New comment by jaysoncena in "Why I stopped using StartSSL (Hint: it involves a Chinese company)"

jaysoncena — Tue, 16 Feb 2016 16:45:19 +0000

They do have a reason :) But paying them to remove our domains in the blacklist is a different issue.