I'm looking for a decentralized database for my Dapp.
I found two helpful solutions orbitdb and gun but I couldn't realize the main difference and which one is more suitable for a social-media-like application that use ethereum smart contract.
I'm the author of gun. I've seen OrbitDB floating around (ha, pardon the pun!) but obviously am not intimately knowledgable about it enough to speak about it. I'll leave that for them to answer. :)
It does look like OrbitDB also uses CRDTs, which means they are probably doing things right/correct. Very few people are using CRDTs, which is sad, but makes GUN pretty unique! Despite the last 4 years I've been trying to evangelize to people that they should use CRDTs, I welcome it.
Maybe a practical way to answer your question, #maroodb , is around GUN's use case for social media:
Yes, GUN is already being used for P2P social media dApps. You can do:
User account systems, including traditional username/password, and password reset (no server, fully P2P).
Published user data, like tweets, etc. that cannot be tampered with by anybody else (signature encryption, but not private).
Private data to the user (cypher encryption).
Secret data between 2 users, like private messages (diffie-hellman).
And we're currently working on making it easier to do group read/write data, which is possible, but no demos yet.
Here are some links that show demos, and other resources, that might be helpful in building your app:
Conceptual understanding of P2P security, done in 1 minute animated cartoon explainers - https://gun.eco/explainers/data/security.html
Short, fast article on how to get started with user accounts for a P2P Twitter - https://hackernoon.com/so-you-want-to-build-a-p2p-twitter-with-e2e-encryption-f90505b2ff8
A 4 minute and 40 line of code interactive coding tutorial, on how to build a super basic P2P Twitter - https://scrimba.com/c/c2gBgt4
Social network idea - https://d.tube/#!/v/marknadal/lanz4e6z (d.tube itself is a P2P youtube)
P2P user account management system - https://d.tube/#!/v/marknadal/gfqglxvd
Super basic Private Message demo in 75 lines of code - https://d.tube/#!/v/marknadal/ganoayt8
Documentation on how to use the security API - https://gun.eco/docs/SEA
And of course, a super friendly chat room of Open Source developers helping each other out build these kind of stuff, https://github.com/amark/gun ! :)
You'll have to ask OrbitDB for their examples/use case for P2P social networking dApps, maybe they know what makes gun different.
Note: A GUN+IPFS adapter will be out soon.
Ethereum is great, but your social network might not scale up if it is implemented primarily as an ethereum smart contract, just as a warning.
We recommend you use Ethereum for any cryptocurrency payments or transactions for your user (not GUN or Orbit).
But we do not recommend building basic social network features (profile info, posts, messages, etc.) using Ethereum.
Likely, 90 to 95% of your app will be GUN or Orbit, and possibly only 3 to 5% smart contracts.
We've made an application where two people can video chat with each other using TokBox, but are running into a lot of technical issues surrounding WebRTC and TokBox itself. I know that Twilio recently launched a Javascript version for their video service, but both TokBox and Twilio seem to be aiming for larger scale publish/subscribe operations. It also isn't as far along as TokBox.
Are there other services out there that can do web video 1 on 1's? Perhaps some that don't use WebRTC and therefore don't have the problems we are facing?
I can't help but to think back to ChatRoulette and similar apps.
If what you need is an application that needs to run within the context of a browser, then WebRTC is your only choice when it comes to the technology to use. There's just nothing else there now that Flash is officially dead.
If you need it to run purely inside a packaged PC/mobile application, then you can use something other than WebRTC, but I don't really see the need for that.
When using real time video technologies, one aspect to look at closely is the quality of the network you are using. The questions I usually ask myself are things like does Skype/Hangouts/FaceTime run any better? If the answer is "yes they do", then the problem is in the implementation you have done/used. If the answer is "no, they are just as bad" then you probably can't do a lot better either.
For alternatives, you can check out the vendors listed in this WebRTC Develoepr Tools Landscape: https://bloggeek.me/webrtc-developer-tools-landscape/
I don't know what you mean with "a lot of technical issues surrounding WebRTC and Tokbox itself", but I do know Tokbox handles millions of 1:1 streaming minutes every day, without issues, and it can even handle sessions with 1 publisher and 3000 subscribers at the same time, so, maybe the technical issues are not there, but in another place...
Ok so ive been tasked with doing "research" on building an intranet for a potential new client for my company and they want some kind of answer by Monday (like any company, they REALLY want this project).
That said, ive been doing "Reasearch" and have so many tabs/windows open that im going nuts and getting lost since my research doesn't have direction...taking in too much and need assistance.
i have 2 questions after a brief explanation.
Essentially, From my understanding, an Intranet is...well in plain
terms, a website that is offline? has a deeper framework because of
the documents that will be available(i think its for a school)and the
ppl who can access them but can also have access to the internet?
Since its for a school(not sure if its mainly for teachers or teachers
and students ) im assuming alot of documents either way.
aside form being private, throughout my research, ive read alot about file security, firewalls, and...and.. im starting to get overwhelmed.
Me myself, am a web designer/so-so developer. decent knowledge of js/jquery and php/mysql though i feel like im just getting started in the web-developer part. Good knowledge of standards HTML/css, designer tools etc...
That said, these are my questions.
1.What is actually involved in planning to create this? What tools( read CMS if possible ) can i use to create any of this. Like to make this happen what do i actually need, and need to know? what direction should i take. If you can direct me and help me close some of these 30+ links spread across my 3 monitors id owe ya lol.
i can build many things and dont mind giving it a HARD go but, this seems like a HUGE project and, im SURE that if my company takes this job, id be put on it. now i can do some of the parts of this project but not 100% sure im the right person for this. Theyre counting on me for a yes/no answer as to whether i can do it (they know its big and itll take time to accomplish) but so...with my skills posted above, am i the right person to do this? or is this more akin to an ACTUAL tried and true developer?
Thank you for your time and, any tips/links/cms info/ i mean ANYTHING that would make this easier PLEASE dont hesitate to share. i dont mind doing the research but i need direction.
i dont want to tell them "YES i can do it" and in a month or two im on pause stuck and the yes turns into a "no i cant do it"
If you have no experience in setting up networks, then you are probably not the man for the job (unless your client is willing to let you have a shot at it for the experience, on a no-win, no-fee basis). Certainly do not over-promise and under-deliver!
I deal with quite a lot of schools, and I know many of the smaller ones will use the secretary's computer as a server, with a simple Windows home network to place files in a shared directory. Its a cheap and cheerful alternative, within their own skillsets to manage.
You should also check with the govermental department with relevant oversight (Dept. of Education, I'd imagine) to see what guidlines, requirements, and grants, are available or required. There may be a specific recommended route to take here, with made to measure firewall protection provided to you.
Larger schools will have invested in proper servers, with automatic external backups in place. I'm not qualified to give advice on how to set those up however. Hopefully someone else here will :)
Best of luck!
CMS may be included as a Intranet website, but Intranet includes much more than CMS. Your best stragetic is tell your boss find a network system integrator to do this project collaboratively. Intranet involves more networking technology (L2, L3, switching, routing, firewall, wireless, etc etc) and physical instrument (ex. cabling).
During a meeting with a client the topic came up about the internet and where its going in the next 5 years. The client wanted to know stats such as "How many businesses are on the web", "How will my client base increase using the web" and "How can a website benefit my business".
But does anyone have any good articles for this? It would be nice to have some FYI facts, from reliable sources, to reassure them that having a website is a smart business decision.
During a meeting with a client the
topic came up about the internet and
where its going in the next 5 years.
You could make some money if you had a good answer for that. I'll bet you can't tell where it's going in the next five months.
Have some fun - find predictions from five years ago and see how true they are.
reassure them that having a website is a smart business decision.
Ask them how not having a web site is a smart business decision. Are you saying they have no presence on the web at all? How have their sales trended over the last five years?
Don't worry about the web site. Ask them what their top three business problems are and see how a web site might help it.
For the third question maybe an article about "long tail" could be of interrest. I understand it as making profit with niche market and large user base, but there is many other angles. As usual Wikipedia is a good start and give many other links to reference materiel.
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I'm sure that all of us have had to deal with telecommuters at some point in time, and I'm facing a situation now where my new project will have a "core" group of office workers and some off-site telecommuters. Not wanting to repeat past mistakes, I'd really like to know what ways people have tried in the past to effectively integrate telecommuters in an agile process, namely scrum.
My first fear is that the telecommuters will be the first ones to break the "daily scrum" routine. And, as human nature often goes, once that gets broken, it's hard to resume and get people back on track. Scrum recommends enforcing small, fun "penalties" for people missing or being late to the daily scrum, like donating a few bucks to a jar which would later be used to buy a case of beers for the end-project party or something. This is obviously something that would be difficult to enforce online.
The other big problem with telecommuters is the "out of sight, out of mind" problem. Aside from using webcams/skype/teleconferencing, what other tips do people have for keeping the team as closely knit as possible?
Also, what about dealing with telecommuters from different timezones? At the moment, we're lucky enough not to have this problem, but it's definitely a possibility at some point in the future. How have other teams dealt with this problem?
Instant messaging really helps with the "out of sight, out of mind" issue as their 'Status' (Available, busy, on the bog, etc) is visible to all. Also, by responding to messages they reinforce the idea that they're generally available.
I wouldn't worry about the Scrum meeting issue, joining a meeting via teleconf is often easier than attending in person.
Set the ground rules upfront. Don't be wishy-washy about them.
You've probably eliminated the "I got stuck in traffic" excuse for missing the meeting or whatever when they're working from home (or a satellite site) and so there's no reason to expect less out of them.
Take advantage of technology:
Use IM. We use it here and it is great for 'reaching out and touching' the guy four states away. Make it a requirement to be available via IM.
Use other tools to help break down the barriers. It'll depend on your situation.
If you're having the daily meeting, it should be clear to everyone that you're going to be asking the questions:
What did you accomplish since we
last met?
What are you going to be doing
today?
What's in the way that needs to be
moved?
Just because you can't see Matt in his cube doesn't give me a right to be lazy or unproductive and unresponsive. It's like dealing with my kids - let them know the rules and what is expected, then nobody can claim ignorance.
We have success using this tools:
Assembla for project management (source control, wiki, scrum tool)
Skype for voice communication
Google talk for im
We are team of 3 developers, in 6 time zones range.
I spent a year as the only remote guy on an Agile team. I called into a conference line for the daily scrum, as well as the planning/review meetings. I kept in contact during the day via IM/e-mail/phone.
I think it worked pretty well overall. The biggest constant drawback was not being able to see the physical whiteboard we used to track the scrum. We discussed moving to some sort of online tool to do this, but it never happened.
I was one timezone away, and I just considered it part of the telecommute tradeoff that I would work the hours that the rest of team kept.
As far as penalties for missing SCRUM - to a certain degree you should enforce this loosely, via the beer jar or whatever. But if someone is consistently missing/late required meetings, then their manager needs to address that.
The are a number of techniques that you can use - remember the purpose of colocation is to encourage collaboration and communication. A few things can help out.
If your team is all nearby - think about having core days of when everybody can come into the office. My current team allows working from home on Mondays and Fridays - and everybody comes in the office Tuesday through Thursday
For distributed teams, I have had good success with using Wikis instead of giant sheets of paper on the wall. The nice thing about wikis is that they encorage the team to edit the forms to meet the needs of the team as opposed to adapting to a more formal tool.
Another advantage of having a Wiki is each person can have their own page to share pictures about their vacations and hobbies - this makes remote people more real.
When you have a distributed team, I want to second the use of Instant Messaging that includes a status (Available, Away (grabbing a cub of coffee), Busy (in a meeting)) - these can include notes if people switch between working at home and at the office.
Webcams are inexpensive and valuable tool
Invest in a decent speaker phone (we like Polycom phones) for your group conference calls
Use tools like LiveMeeting to promote remote pair programming
A technique for doing stand ups over the phone is to have the person talking say the name of someone else in the group who has not gone yet - this keeps everyone paying attention.
For iteration (sprint) planning meetings - follow up with meeting minutes or a communication plan to make sure that everyone is on the same page. Not being colocated means a tad more documentation and intentionality on communicating.
Good luck
SCRUM and many other agile methods really do depend on physical proximity - it is hard to integrate telecommuters into any development process where integration happens frequently, but these particular processes are especially hostile to disembodied developers.
You will have to adapt the processes to the situation at hand. Video conferencing using webcams is actually very usable, and in fact yo might want to experiment with having their webcam on all the time in their cubicle/work area so people can just walk up and ask a question as they would with any other coworker.
But at the end of the day, you simply have to expect things to go differently for them - they aren't going to be able to fully participate in many processes if you are an agile shop.
-Adam
Make sure they attend the daily standup via webcam; as you said that's the first mis-step down a slippery slope. We try to have all meetings done with a RoundTable as well which really helps.
I've been doing this for two months (working in Canada with the core team in Dublin) and so far everything has been going really well.
See Scott Hanselman's writeup on his first year working remotely at Microsoft - definitely some good tips there. One Year Later.
Instead of a beer jar, the privilege of telecommuting itself could be part of the bargain for participation when required. If the team is not responsible enough to telecommute properly than they probably shouldn't be. More fun penalties for occasional tardiness could be to use a funny avatar to represent the person that is missing from the meeting.
Other methods of keeping people closely knit is using collaboration tools such as Wikis and project tracking tools such as Basecamp or FogBugz.
For differing timezones, early meetings will need to occur based on the furthest west time zone, unless one is on the opposite side of the world, which is a bigger problem. Then it will probably be based on who is in charge.
We have been able to manage daily scrums in our environment even with distributed teams over the phone.
It helps to use software such as Rally and Basecamp to manage the process.
One place I worked used Asterisk instead of a normal phone system. It worked well because when you are working from home, you simply log on, people can call your direct line number, outsiders don't need to know. Even though phone call cost are relativity trivial these days, having a 'always on' connection encourages more communication. The sound quality is better too.
For telecommuters/distributed teams, I recommend getting a decent phone - most desk phones lose the ability for folks on the other end to hear folks who are multiple feet away from the phone during a standup.
When you do your demos of working code for stakeholders at the end of the iteration, use webex or livemeeting or something to share the desktop and a camera to show the speaker so that your distributed participants can see what's going on. (Even better would be to ask your telecommuters to attend during iteration boundaries to participate in person).
I recommend getting folks together for a few weeks at the beginning of the project during the inception/kickoff phase so folks can build interpersonal relationships. It's amazing how helpful the face-to-face interaction up front can be to build a foundation for teamwork.
Use a distributed card wall. I like Mingle (http://mingle.thoughtworks.com), but I haven't used other tools, so can't comment on them.
For retrospectives, it's useful to have a proxy in the room using IM to communicate with your distributed team members... so that any comments the distributed folks have can be written onto a piece of paper (or post-it, or however you do yours).
As for your fears of "out of site, out of mind", my preference for things like this is to not create solutions for problems that have not yet materialized. If you find that your team is becoming disconnected (prime discussion points for retrospectives), then you can facilitate a team discussion on how to deal with any issues that arise. Again - the team should help identify the problem and the solution rather than having a manager or scrum master dictate solutions. Start with an assumption of trust.
Distribute Scrum requires good preparation. It is not just about the tool.
We supported many rollouts in distributed environment and there was one fundamental point - people.
The most efficient is to start with ALL people in one location. They have to meet in person so they can know each other as persons, not just someone virtual on the other side of the world. As I used to say - team members need to smell each other.
For release planning meet at one location, if possible. Change locations so you visit all of them, to have a context and understanding of culture, habits, persons. For sprint planning use video meetings, screen sharing etc. It is not necessary to travel (it would be too often).
Clear roles and team(s) organization must be established. You have to have Product Owner and Scrum Masters. You should consider if you do not want to get PO & SM as close to the team as possible. Definitely you have to get them into face 2 face meetings (it is about face, not a location) every day.
Definition of done, if agreed by the team, helps to have the same understanding what Done means. In distributed environment is a must.
You will need a good communication tools for daily stand-ups . We found usable to use Skype or Office communicator for dailies. We use audio AND chat. Especially in international environment chat allows you to understand people. Keep communication channel open after daily so team members can discuss what is necessary outside of daily report.
And, the most important, is to do regular retrospectives with all team members in all locations. Do not forget to implement ideas coming from retrospective. Teams in other locations will need a local support who will help them to implement ideas.
I work on a team of 5. We to facilitate our telecommute workplace we use:
Asana - Project and Task management
Google Talk + Your favorite IM
client (I used Pidgin)
RingCentral - VOIP Telephone
Gmail - asynchronous communication (i.e. email)
Dropbox - file transfer and
backup
Team Viewer - Screen Sharing, Training, and Presentations
Even with these tools it is easy to fall short on your process so it is important to establish some best practices for your team based on your dynamic. For example, we have two chief practices:
Communicate Often - because we are not in the same location when communicating it is easy to forget that you are working on a team. For our team, we update our tasks in Asana with comments describing ideas, obstacles, and task completeness. When immediate assistance or feedback is needed, don't wait, seek assistance via IM or email if (the person is offline).
Lean on the side of over communication - This pertains more to Asana comments and emails. However, in general we found it is better to give more information than is needed (within bounds).