I am a software developer based in Cambridge, UK. I develop several tools that help enhance the steem community especially the CN. I maintain a Steem Witness Node that supports the growth of the steem blockchain.

I am a Utopian Moderator. I review submissions in the development category.

I am currently the 7-th most delegated account - currently 322 delegators! on the STEEM Blockchain.

https://steemyy.com

Weekly Witness Update

As a witness, I feel it is useful to have a weekly report, which will be produced every weekend at the hashtag #witness-report

Last Report

@justyy's Weekly Witness Report - 14/May/2019 - Three weeks ago

Witness Status

My Witness Page

Witness Server

• Running 20.10 now (Docker)
• Location: Germany
• 10 cores of Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz
• 60 GB RAM
• 1600 GB SSD
• 1300 Mbit/s port, Upstream 130 Gbits
• Ubuntu 18.04 bionic

Block produced in last 7 days

35 blocks produced in last 7 days and rewarded 79311.4 VESTS in total (approximately 39 Steem Power).

Witness Summary

Rank 73(-5) - Total Votes: 12633 MVs and 829 Voters (+5) . Total: Missed 33 Blocks. (5 - Miss since last update). Feed published every 2 hours smoothly.

Backup Server is cancelled to save the cost in the current bear market and considering the current witness ranking position are dropping (supporters are powering down)

Witness Updates (Steem Posts)

1. Finally be online again - Not easy, Lessons Learned
2. A bit longer.... be patient..
3. Cryptocurrency Bots Adding BitcoinHD
4. Witness Update: Full Replay in Progress
5. Milestone: Leetcode 400 problems solved.
6. Have some faith on Steem because A One-Year Old PR has finally been reviewed and merged
7. Earn Free Stellar-Lumens by Learning in Two Minutes!

Delegation

@justyy is the 7-th most delegated (322 Delegators) project on steem blockchain (See below).

Delegation Rewards

In last 7 days, 107 SP were given out to the 322 delegators. Thank you!

The steem price is low and hence more delegations to @justyy as his delegation return APR% still stays the same.

Revenue and Expenses

1. Monthly SteemSQL cost: 20 SBD roughly 55 STEEM at current price.
2. Monthly Costs for The Witness Nodes: around 100 USD
3. Monthly API server costs: around 150 USD
4. Monthly Domain Costs: 12 USD
   And not to mention time and efforts spent on: developing new tools, monitoring and upgrading the witness servers. It is profitable only (especially under such low STEEM price) if you are at Top 50, so please do support me by voting me as a witness or set as a witness proxy. Thanks.

I like STEEM and I do believe the STEEM - that is why I have been spending money and efforts on being a witness and promoting STEEM community via developing tools/applications, providing APIs, helping Utopian moderating work etc.

I am not giving up .. YET, and I will keep working hard to bring something unique to the community.

Utopian Moderations

1. RE: STEEM SCOT Voting Power Viewer Update

Blog posts

1. Depth First Search to Compute the Permutation with Duplicates: Letter Tile Possibilities
2. Design a Container with O(1) Add, Remove and GetRandomElement
3. Algorithms to Count Subarray (Contiguous) Sum That Equals k
4. Algorithms to Find the Missing Element in Sorted Array
5. Print Strings Right Justified – in a Rectangular Frame
6. WordPress Membership Plugin
7. Algorithms to Find the Three Numbers in Array that Sum up to Zero (3Sum)
8. How to Trim a Binary Search Tree using Depth First Search Algorithm (Recursion)?
9. Algorithm to Decode Run-Length Compression String
10. How to Find the Vertical Order Traversal of a Binary Tree using DFS Algorithm?
11. Using BackTracking Algorithm to Find the Combination Integer Sum
12. Algorithms to Find Maximum Size Subarray (Contiguous) Sum That Equals k
13. WordPress Hosting Services You Can’t DIY
14. How to Reverse Words in a String in Place using C++ std::reverse?
15. Classic Knapsack Problem Variant: Coin Change via Dynamic Programming and Breadth First Search Algorithm
16. Algorithms to Check if a Graph is a Valid Tree by Using Disjoint Set (Union Find) and Breadth First Search
17. The Fisher–Yates Random Shuffle Algorithm
18. How to Run a Specified Set of Javascript (NodeJS) Unit Tests using Mocha?
19. Algorithm to Find the Intersection of Two Linked Lists
20. The Custom Sort String Algorithm with Count and Write
21. How to Validate UTF-8 Encoding? (The Simple UTF-8 Validation Algorithm)
22. Algorithms to Count the Number of Palindromic Substrings
23. Algorithm of Two Pointer (Sliding Windows) to Find All Anagrams in a String
24. Depth First Search Algorithm to Find Leaves of a Binary Tree
25. Breadth First Search Algorithm to Check Completeness of a Binary Tree?
26. Algorithms to Remove All Adjacent Duplicates In a String
27. The NegaBinary Algorithm – How to Convert to Base Minus Two (-2) ?
28. Greedy Algorithm to Find the Largest Perimeter Triangle by Sorting
29. How to Keep Your WordPress Website Secure?
30. How to Find Largest Value in Each Tree Row/Level using BFS or DFS Algorithm?
31. How to Start a Podcast on WordPress?
32. 找一个 IPAD 9.7能刷题的蓝牙键盘不容易
33. 如何延长硬盘的寿命 – 一定记得要备份
34. 为什么要去大公司? GE算是一个一本吧
35. GO语言的布道者Dave Cheney: 这十年? 除了牛逼我想不到别的词.
36. 把比特币变现的几种方法
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Enjoy and Steem On!

Delegate to @justyy

@justyy runs a automatic delegation service for a long time. Delegate to @justyy for at least 5 SP and start receiving daily payout as interests (from 8% to 10% APR). Also, as a supporter, the delegators will start to receive complimentary/curation upvotes (as a thank you) per day from e.g @justyy and a few other curation trails. For more information, read this. The voting weight algorithm is open source.

• Delegate to @justyy - at least 5 SP to join (automatically)
• Undelegate to @justyy (Quit) - SP returned by steem blockchain in 5 days
• View Current Delegators/Supporters

322 Delegators! Thank you!

@justyy is the 7-th delegated project on steem blockchain

Please note that the SP you enter is the final amount to delegate. For example, if you already delegate 10 SP and you want to delegate another 5 SP, you will need to enter 15 SP (instead of 5 SP) in the delegation form.

Vote for me or Set me as a witness Proxy - Every vote counts! - Thank you!

Your Vote is much appreciated, and every vote counts.

Check out My Witness Page

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My Witness Campagin

Support me and my work: my witness campagin:

1. voting me here, or
2. voting me as a proxy

Some of my contributions:

1. SteemIt Tools, Bots, APIs and Tutorial
2. VPS Database
3. Video Downloader
4. Cryptocurrency Discord Bot
5. SteemIt Discord Bot

Join cnsteem Discord channel: https://discord.gg/SnNaaYS