Glossary
Memory for Multi-Agent Systems
Memory for Multi-Agent Systems
Terms related to the shared, distributed, or coordinated memory architectures used by collaborating agents. Target: Architects/CTOs.
Shared Memory Architecture
A memory architecture where multiple agents or processes access a common, shared memory space, enabling direct data exchange and coordination.
Distributed Memory Fabric
A software infrastructure layer that abstracts and unifies memory resources across multiple nodes in a distributed system, providing a single logical view of memory.
Memory Consistency Model
A formal specification that defines the ordering guarantees and visibility of memory operations (reads and writes) across multiple agents or processors in a concurrent system.
Eventual Consistency
A consistency model guarantee that if no new updates are made to a data item, all reads to that item will eventually return the last updated value, without guaranteeing immediate synchronization.
Strong Consistency
A consistency model that guarantees that any read operation returns the value of the most recent write operation, making the system appear as if it has a single, up-to-date copy of the data.
Causal Consistency
A consistency model that guarantees that causally related operations are seen by all processes in the same order, while allowing concurrent operations to be seen in different orders.
Memory Replication Strategy
The methodology for copying and maintaining data across multiple nodes in a distributed system to improve availability, fault tolerance, and read performance.
Leader-Follower Replication
A replication strategy where one designated leader node handles all write operations and propagates changes to one or more follower nodes, which serve read requests.
Multi-Leader Replication
A replication strategy where multiple nodes can accept write operations, requiring a mechanism to handle concurrent writes and synchronize data between leaders.
Conflict-Free Replicated Data Type (CRDT)
A data structure designed for distributed systems that can be updated concurrently by multiple agents without coordination, and whose state can always be merged deterministically.
Memory Sharding
A database partitioning technique that splits a large dataset into smaller, more manageable pieces called shards, which are distributed across multiple nodes.
Consistent Hashing
A distributed hashing scheme that minimizes reorganization when nodes are added or removed from a cluster, commonly used for data sharding and load balancing.
Memory Transaction
A sequence of memory operations (reads and writes) that are executed as a single, atomic unit, ensuring the system transitions from one consistent state to another.
Two-Phase Commit (2PC)
A distributed consensus protocol that coordinates all participating nodes to commit or abort a transaction, ensuring atomicity across the system.
Paxos
A family of consensus protocols for distributed systems that enables a collection of nodes to agree on a single value despite the possibility of failures.
Raft
A consensus algorithm for managing a replicated log, designed to be more understandable than Paxos, which elects a leader to manage log replication to follower nodes.
Byzantine Fault Tolerance (BFT)
The property of a distributed system to reach consensus and function correctly even when some components fail or behave arbitrarily (maliciously).
Memory Gossip Protocol
A peer-to-peer communication protocol where nodes periodically exchange state information with a randomly selected set of peers to disseminate information throughout a cluster.
Memory Snapshot
A point-in-time, read-only copy of the entire state of a system or dataset, used for consistent backups, analytics, or system recovery.
Memory Checkpoint
A technique for saving the current state of a system to stable storage, allowing it to restart from that known-good state in case of a failure.
Memory Write-Ahead Log (WAL)
A durability mechanism where all modifications to data are first written to a persistent log before being applied to the main data structures, ensuring crash recovery.
Memory Version Vector
A data structure used in distributed systems to track causality between different versions of a data object replicated across multiple nodes.
Memory Merge Algorithm
An algorithm that resolves differences between multiple versions of data (e.g., from concurrent edits) to produce a single, unified version.
Memory Locking Mechanism
A concurrency control method that restricts access to a shared memory resource to a single agent at a time to prevent race conditions.
Distributed Lock Manager (DLM)
A service that provides mutually exclusive access to a resource (like a file or data record) across multiple nodes in a distributed system.
Memory Lease
A time-bound grant of exclusive access to a resource, which automatically expires, preventing deadlock if the holder fails.
Memory Quorum
The minimum number of nodes in a distributed system that must participate in an operation (like a read or write) for it to be considered valid and consistent.
Memory Event Bus
A messaging middleware pattern that facilitates communication between decoupled components by allowing them to publish and subscribe to events.
Memory Pub/Sub
A messaging pattern where senders (publishers) categorize messages into topics without knowledge of the receivers (subscribers), who receive messages for topics they have subscribed to.
Memory Stream Processing
The real-time processing of continuous, unbounded sequences of data records (streams), often for analytics, transformation, or aggregation.
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