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Changes for page Networks

Last modified by Zenna Elfen on 2025/11/24 12:07
From version 14.1
edited by Zenna Elfen
on 2025/11/24 11:48
Change comment: There is no comment for this version
To version 5.1
edited by Zenna Elfen
on 2025/11/23 22:45
Change comment: There is no comment for this version

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3 -This page contains an overview of all P4P Networks in this wiki and their building blocks.
4 -
5 -You can also [[add a P4P Network>>doc:Projects.WebHome]] or have a look at the [[P4P Applications>>doc:P4P.Applications.WebHome]].
3 +This page contains an overview of all P4P Networks in this wiki. You can also [[add a P4P Project>>doc:Projects.WebHome]] or have a look at the [[P4P Applications>>doc:P4P.Applications.WebHome]].
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16 16  
17 -== Building Blocks of P4P Networks ==
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22 -Lost in translation? Take a look at the [[terminology>>doc:P4P.Definitions.WebHome]].
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24 -
25 -To fully assemble a P4P network one needs a few different building blocks. The following is an overview of the building blocks needed for P4P networks.
26 -
27 -
28 -==== **Data Synchronization** ====
29 -
30 -> Synchronization answers **how updates flow between peers** and how they determine what data to exchange. This layer is about **diffing, reconciliation, order, causality tracking, and efficient exchange**, not persistence or user-facing collaboration semantics.
31 -
32 -- _How do peers detect differences and synchronize state?_
33 -- Examples: Range-Based Set Reconciliation, RIBLT, Gossip-based sync, State-based vs op-based sync, Lamport/Vector/HLC clocks, Braid Protocol
34 -
35 -*Relevant links or documentation:*
36 -
37 -
38 -==== **Collaborative Data Structures & Conflict Resolution** ====
39 -
40 -> This layer defines **how shared data evolves** when multiple peers edit concurrently. It focuses on **conflict-free merging, causality, and consistency of meaning**, not transport or storage. CRDTs ensure deterministic convergence, while event-sourced or stream-driven models maintain a history of all changes and derive consistent state from it.
41 -
42 -- _How do peers collaboratively change shared data and merge conflicts?_
43 -- Examples: CRDTs (Yjs, Automerge), OT, Event Sourcing, Stream Processing, Version Vectors, Peritext
44 -
45 -*Relevant links or documentation:*
46 -
47 -
48 -==== **Data Storage & Replication** ====
49 -
50 -> This layer focuses on **durability, consistency, and redundancy**. It handles write-paths, crash-resilience, and replication semantics across nodes. It is the “database/storage engine” layer where **data lives and survives over time**, independent of sync or merging logic.
51 -
52 -- _How is data persisted locally and replicated between peers?_
53 -- Examples: SQLite, IndexedDB, LMDB, Hypercore (append-only logs), WALs, Merkle-DAGs (IPFS/IPLD), Blob/media storage
54 -
55 -*Relevant links or documentation:*
56 -
57 -==== **Peer & Content Discovery** ====
58 -
59 -> Discovery occurs in two phases:
60 -> 1. **Peer Discovery** → finding _any_ nodes
61 -> 2. **Topic Discovery** → finding _relevant_ nodes or resources
62 -> These mechanisms enable decentralized bootstrapping and interest-based overlays.
63 -
64 -
65 -- _How do peers find each other, and how do they discover content in the network?_
66 -- Examples: DHTs (Kademlia, Pastry), mDNS, DNS-SD, Bluetooth scanning, QR bootstrapping, static peer lists, Interest-based routing, PubSub discovery (libp2p), Rendezvous protocols
67 -
68 -*Relevant links or documentation:*
69 -
70 -# **Identity & Trust**
71 -
72 -> Identity systems ensure reliable mapping between peers and cryptographic keys. They underpin authorization, federated trust, and secure overlays.
73 -
74 -- _How peers identify themselves, authenticate, and establish trustworthy relationships?_
75 -- Examples: PKI, Distributed Identities (DIDs), Web-of-Trust, TOFU (SSH-style), Verifiable Credentials (VCs), Peer key fingerprints (libp2p PeerIDs), Key transparency logs
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80 -
81 -
82 -== Distributed Network Types ==
83 -
84 -
85 -[[Flowchart depicting distributed network variants, under development. Building on work from Z. Elfen, 2024: ~[~[https:~~~~/~~~~/doi.org/10.17613/naj7d-6g984~>~>https://doi.org/10.17613/naj7d-6g984~]~]>>image:P4P_Typology.png||alt="Flowchart depicting typologies of distributed networks, such as Friend-2-Friend, Grassroots Networks, Federated Networks, Local-First, P2P and P4P Networks" data-xwiki-image-style-alignment="center" height="649" width="639"]]
86 -
87 -
88 -
89 -== Overview of P4P Networks ==
90 -
91 91  {{include reference="Projects.WebHome"/}}
P4P_Typology.png
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