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holochain's profile
Holochain
Holochain
Holochain
@holochain

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Holochain

@holochain

Creating an ecosystem of decentralized apps with distributed, user-controlled storage. Cheaper, faster, better than #Blockchain https://forum.holochain.org 

Globally Distributed
holochain.org
Joined December 2016

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    1. Holochain‏ @holochain 5 Nov 2019
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      2/3 ➡️Why is this important?⬅️ 🚨The important bit🚨: Sim2h allows us to both run early public test instances of the full Holochain stack and also invite hApp developers to try their hApps over the Internet and help us collect performance data. ⬅️ isn't that great?!

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    2. Holochain‏ @holochain 5 Nov 2019
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      3/3 ➡️Why is this important?⬅️ In other words, sim2h marks the first point in time, since we abandoned the Go prototype, at which anyone (developers and non-developers) can run alpha test releases of hApps over the public internet!pic.twitter.com/50qV48h3qr

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    3. Holochain‏ @holochain 5 Nov 2019
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      1/18 ➡️So what is sim2h?⬅️ There is one thing that sim1h and sim2h have in common: both rely on a central point connecting the agents -- but that is about it.

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    4. Holochain‏ @holochain 5 Nov 2019
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      2/18 ➡️So what is sim2h?⬅️ While sim1h is very similar to contemporary centralized front-end / back-end architecture in that it uses a database as the central component, sim2h does not rely on any centralized data persistence!

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    5. Holochain‏ @holochain 5 Nov 2019
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      3/18 ➡️So what is sim2h? Instead it plays a role similar to the old phone switch-boards where an operator takes a request of a network participant & sets up the appropriate connection to another participant (without storing or controlling what those participants say on that line)pic.twitter.com/UNnwfxe2XD

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    6. Holochain‏ @holochain 5 Nov 2019
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      4/18 ➡️So what is sim2h?⬅️ Interestingly, this actually reduces complexity compared to the sim1h solution where the network had to be simulated inside a database which meant actually storing messages and then polling for messages on the other end.pic.twitter.com/1yKdpjFiDO

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    7. Holochain‏ @holochain 5 Nov 2019
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      5/18 ➡️So what is sim2h?⬅️ The concept of a switch-board, which maintains active websocket connections to each agent that is online, works much better with all the assumptions that have been made in other parts of the Holochain stack -- mainly #Holochain core, as well as #lib3h.pic.twitter.com/WEW6mVWnm7

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    8. Holochain‏ @holochain 5 Nov 2019
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      6/18 ➡️So what is sim2h?⬅️ In fact, that central component of sim2h borrows a lot from already existing pieces and in essence is like the in-memory network that we’ve used in core for local testing of multiple instances (i.e. mocking the network in-memory).

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    9. Holochain‏ @holochain 5 Nov 2019
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      7/18 ➡️So what is sim2h?⬅️ In other words, Sim2h uses the websocket implementation from lib3h to create encrypted “wormholes” between each Holochain conductor instance and this central “in-memory” switch-board.pic.twitter.com/6oW8NbDzY8

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    10. Holochain‏ @holochain 5 Nov 2019
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      8/18 ➡️So what is sim2h?⬅️ The result is that we have a single point to route all Holochain network messages to their according recipient. But with that said, all of the other specific and important aspects of the Holochain network are still present including: Check the photo 👇pic.twitter.com/HCEZn1pnTQ

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      Holochain‏ @holochain 5 Nov 2019
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      9/18 ➡️So what is sim2h?⬅️ Note that the above bullet points are not true for sim1h, as messages (as well as entry data) is stored in the centralized database and that’s what nodes rely on.

      3:29 AM - 5 Nov 2019
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        2. Holochain‏ @holochain 5 Nov 2019
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          10/18 ➡️So what is sim2h?➡️ Getting rid of that database both gets us much closer to the network structure that Holochain is built for and also has a very important pragmatic benefit: 👉👉Check the graphicpic.twitter.com/dVrtN8t76r

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        3. Holochain‏ @holochain 5 Nov 2019
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          11/18 ➡️So what is sim2h?➡️ The database sim1h uses can’t just be made available publicly on the internet -- even for testing purposes -- without asking for trouble. Sim2h on the other side just facilitates connections between nodes of the same DNA.pic.twitter.com/L3ZA6eJuou

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        4. Holochain‏ @holochain 5 Nov 2019
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          12/18 ➡️So what is sim2h?➡️ The state of the DHT is stored exclusively in all the nodes at the edges. Any change has to pass through the DNAs validation rules the same way it would in a fully peer-to-peer setting.

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        5. Holochain‏ @holochain 5 Nov 2019
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          13/18 ➡️So what is sim2h?➡️ This difference is precisely what enables us to use sim2h right now for our first public Holochain test network. This is also an important prerequisite for Holo’s first test network.pic.twitter.com/PGVmUquUoT

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        6. Holochain‏ @holochain 5 Nov 2019
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          14/18 ➡️So what is sim2h?➡️ That said, the fact that all messages are routed through a single point creates a single point of failure, which surely is not what you would want for a production ready p2p framework.

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        7. Holochain‏ @holochain 5 Nov 2019
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          15/18 ➡️So what is sim2h?➡️ But it actually is beneficial for test networks, as already described in the post about sim1h.

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        8. Holochain‏ @holochain 5 Nov 2019
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          16/18 ➡️So what is sim2h?➡️ That’s because, in all alpha test networks, and potentially in early betas, we definitely want to be able to log network messages as needed in order to gain a global view for debugging.pic.twitter.com/rVq7d7vO1d

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        9. Holochain‏ @holochain 5 Nov 2019
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          17/18 ➡️So what is sim2h?➡️ So we believe the single point of failure is a reasonable trade-off (during alpha and early beta phases) for the ability to analyse the network.pic.twitter.com/69jSarZvsC

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        10. Holochain‏ @holochain 5 Nov 2019
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          18/18➡️So what is sim2h?➡️ And should that central point actually experience issues, we can spawn new machines without even managing any application data, since that is stored at the node level.pic.twitter.com/6BfNWpujrL

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        11. End of conversation

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