Membase
Author: b | 2025-04-24
Command Line tools for Administering the NorthScale Membase Server - membase/membase-cli How to install Membase - Membase osdn
membase - static.cs.brown.edu
It has been just over a couple of weeks since the launch of membase.org, along with NorthScale’s partners at Zynga and NHN. In that time, we’ve been steadily increasing the postings on the wiki and responding to questions on the mailing list, the XMPP Chat and the IRC channel. When questions come up, they tend to be about how the membase database management system compares to other open source projects, what kind of client one would use, or what the pieces are when deployed.The World of NoSQLGenerally I think people get that at a high level, membase is a distributed, key-value database management system which is designed to scale both up and down, doing so without interrupting data services.Membase is an example of which DB is designed to deliver the same kind of performance apps need to be in the critical path of getting data for the user. Looking at the world of NoSQL, in my opinion, this was an underserved area.As a new area there is a lot of experimentation with NoSQL. Some are experimenting with a mix of online and analytics, others are experimenting with looser or eventual consistency, others are adding more data structure primitives on K/V stores and yet others are looking at data in more of a document-oriented way.We were aware of and even experimented with a number of these, but we ended up on a different path with membase, as we were trying to solve some very specific problems along with our partners. Apps
dterei/membase: Membase 1.7 source code - GitHub
Had been built around memcached. Some portion of those apps absolutely needed SQL; for that, they already have Drizzle, MySQL or PostgreSQL, or Cubrid (Cubrid is big at NHN). Another portion of the same apps really didn’t need SQL, but they did need the replication, persistence, and data management that most of the SQL-based relational database management systems (RDBMS) provided, albeit with more complexity and management than was typically desired.Enter membase. We could take the existing infrastructure apps had been built around (memcached protocol and clients) and add the requisite level of durability, add rules for allowing admins and developers to control how that durability happens per item, and get smart about how it would run in a distributed fashion.How Does the Rubber Meet the Road?We needed to inject just a bit of intelligence into the system. The beauty of memcached is that the intelligence is, for the most part, on the client so the server can just be fast and dumb. We didn’t want to stray too far from that, but if you expect the system to be non-volatile, have replication and be able to grow and shrink while online, you need the system to have some concept of where things live. That led to vbuckets, which Dustin’s excellent blog covers.With a way to know where things live, we still need durability and replication along with those buckets. That’s where the membase engine comes in. The membase engine can be told to replicate a set of data from anMembase Intro from Membase Meetup San Francisco
. Command Line tools for Administering the NorthScale Membase Server - membase/membase-cliunibaseio/membase: python sdk for membase operation - GitHub
Alternate node. It can also be told, via a configuration map, who is authoritative for a given bucket.Further up the stack though, the clients won’t know about vbuckets. They know modulus or consistent hashing to connect to servers, so we needed something compatible. We already had moxi, which would give very simple clients intelligence around operation deduplication, intelligent connection sharing, what to do in the case of failures and even some non-coherent caching to speed things up even further. It wouldn’t take much more to teach moxi and it’s underlying configuration engine, libconflate, to know what to do with the same vbucket map. This would allow existing clients, and even existing applications to get the fast, distributed key/value database they need, so that’s what we did.ConclusionAt its core then, membase is the membase engine which implements persistence, replication and vbuckets to grow and shrink dynamically. To bring vbuckets to clients who don’t have that slight extra bit of intelligence, there is moxi. To migrate data between nodes without interrupting service, there is the vbucketmigrator. Keep an eye on membase.org as we fill out more details.Membase is an Example of Which DB
It accepts the the table but anytime i try to select the DOSBox file it just crashes the cheat menu I'm clearly doing something wrong her i just don't know what princessgaladriel What is cheating? Posts: 3 Joined: Thu Apr 27, 2023 2:02 pm Reputation: 0 Re: Elder Scrolls: Arena Post by princessgaladriel » Thu Apr 27, 2023 2:13 pm Hello Everyone.I am very new at cheat engine. I read the tutorial, and I downloaded both of the tables, but for some reason, I don't think the addresses are lining up. I followed the instructions and read what people are saying and I am just confused. Can someone help me, please? I have the Dosbox version of Elder Scrolls: Arena that I got from Steam. Mac2mnster What is cheating? Posts: 4 Joined: Tue Nov 21, 2017 7:53 pm Reputation: 0 Re: Elder Scrolls: Arena Post by Mac2mnster » Wed Jul 26, 2023 9:27 am princessgaladriel wrote: ↑Thu Apr 27, 2023 2:13 pmHello Everyone.I am very new at cheat engine. I read the tutorial, and I downloaded both of the tables, but for some reason, I don't think the addresses are lining up. I followed the instructions and read what people are saying and I am just confused. Can someone help me, please? I have the Dosbox version of Elder Scrolls: Arena that I got from Steam.Sorry if this is considered a necro. To get the Steam version to work, you'll need to do the following:- Run the game via Steam and load up a saved game. - Run CE - Select the "DOSBox 0.74, Cpu...." Process in your list. - Load the "Arena_new.Ct" fileThe "Membase" being used by default on this CT is for DOSBox version "0.74-2.1"; which is the version that GOG.com uses. You'll need to move them to the "Membase of DosBox 0.74" (Steam) version manually; it's under the "Pre-Defined Base Addresses..." section:- Select "Hitpoints Current" and hold "Shift" then press the down arrow until the "Skill Points to distribute" entry.- Click and drag the mouse from "Skill Points to distribute" (it should have the darker bar) to the "Membase of DosBox 0.74" entry. --> Make sure, when you're dragging with the mouse, that the black line is going through the middle of the "4" in "0.74". The memory address for it should not be visible as the black line should replace it.If you did it right, allScalable Architecture with Membase [19]
How to install Membase - OSDN
Editorial information provided by DB-EnginesNameCouchbase Originally called Membase Xexclude from comparisonEsgynDB Xexclude from comparisonTiDB Xexclude from comparisonDescriptionA distributed document store with integrated cache, a powerful search engine, in-built operational and analytical capabilities, and an embedded mobile databaseEnterprise-class SQL-on-Hadoop solution, powered by Apache TrafodionTiDB is an open source distributed SQL database that supports Hybrid Transactional/Analytical Processing (HTAP) workloads. It is MySQL compatible and features horizontal scalability, strong consistency, and high availability.Primary database modelDocument storeVector DBMSRelational DBMSRelational DBMSSecondary database modelsKey-value store originating from the former Membase product and supporting the Memcached protocolSpatial DBMS using the Geocouch extensionSearch engineTime Series DBMSVector DBMSWide column storeDocument storeScore15.05Rank#36 Overall#5 Document stores#2 Vector DBMSScore0.19Rank#317 Overall#140 Relational DBMSScore3.74Rank#71 Overall#38 Relational DBMSWebsitewww.couchbase.comwww.esgyn.cnpingcap.comTechnical documentationdocs.couchbase.comdocs.pingcap.com/tidb/stableDeveloperCouchbase, Inc.EsgynPingCAP, Inc.Initial release201120152016Current releaseServer: 7.6, March 2024; Mobile: 3.3, August 2024; Couchbase Capella (DBaaS), September 20248.2.0, July 2024License Commercial or Open SourceOpen Source Business Source License (BSL 1.1); Commercial licenses also availablecommercialOpen Source Apache 2.0Cloud-based only Only available as a cloud servicenononoDBaaS offerings (sponsored links) Database as a ServiceProviders of DBaaS offerings, please contact us to be listed.TiDB Cloud: Fully-managed TiDB Service. Bring everything great about TiDB to the cloud.Implementation languageC, C++, Go and ErlangC++, JavaGo, RustServer operating systemsLinuxOS XWindowsLinuxLinuxData schemeschema-freeyesyesTyping predefined data types such as float or dateyesyesyesXML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nonoSecondary indexesyesyesyesSQL Support of SQLSQL++, extends ANSI SQL to JSON for operational, transactional, and analytic use casesyesyesAPIs and other access methodsCLI ClientHTTP RESTKafka ConnectorNative language bindings for CRUD, Query, Search and Analytics APIsSpark ConnectorSpring DataADO.NETJDBCODBCGORMJDBCODBCProprietary protocolSQLAlchemySupported programming languages.NetCGoJavaJavaScript Node.jsKotlinPHPPythonRubyScalaAll languages supporting JDBC/ODBC/ADO.NetAdaCC#C++DDelphiEiffelErlangHaskellJavaJavaScript (Node.js)Objective-COCamlPerlPHPPythonRubySchemeTclServer-side scripts Stored proceduresFunctions and timers in JavaScript and UDFs in Java, Python, SQL++Java Stored ProceduresnoTriggersyes via the TAP protocolnonoPartitioning methods Methods for storing different data on different nodesAutomatic ShardingShardinghorizontal partitioning (by key range)Replication methods Methods for redundantly storing data on multiple nodesMulti-source replication including cross data center replicationSource-replica replicationMulti-source replication between multi datacentersUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.MapReduce Offers an API for user-defined Map/Reduce methodsyesyesyes with TiSpark ConnectorConsistency concepts Methods to ensure consistency in a distributed systemEventual ConsistencyImmediate Consistency selectable on a per-operation basisImmediate ConsistencyImmediate ConsistencyForeign keys Referential integritynoyesyes full support since version 6.6Transaction concepts Support to ensure data integrity after non-atomic manipulations of dataACIDACIDACIDConcurrency Support for concurrent manipulation of datayesyesyesDurability Support for making data persistentyesyesyesIn-memory capabilities Is there an option to define some or. Command Line tools for Administering the NorthScale Membase Server - membase/membase-cli
Memcached Gets NoSQL in Membase
Features of two or more different database types. This allows them to provide a solution for unique use cases where other database types are not suitable.List of NoSQL DatabasesBelow is a list of NoSQL databases, arranged into sections by database type:List of Key-Value DatabasesRedisRedis works as a data structure server that stores data in-memory. This means that Redis reads and modifies data from the main memory, but it also has built-in persistence. This feature allows saving data to disk so it can be reconstructed if the system restarts.Advantages of using Redis:Working in-memory allows for high performance and flexibility.Support for many different data types and programming languages.Easy to scale and supports automatic partitioning.Note: If you are interested in using Redis, check out our guides on how to install Redis on Ubuntu and Mac.AerospikeLike Redis, Aerospike is open-source, in-memory NoSQL database. Aerospike is optimized for online retail use thanks to its high performance and the ability to combine transaction data with analytics.Advantages of using Aerospike:Reliable performance with very low latency.A good ratio of price and performance makes it suitable for smaller businesses.RiakRiak stores key-value pairs in data objects it calls "buckets." It supports a wide range of data formats and emphasizes data stability and predictable performance.Advantages of using Riak:Key-value pairs are saved in clusters of three nodes, with the option of replicating the data to additional nodes for backup.Data can be stored in-memory, on disks, or both.Multi-datacenter replication allows to back up your data to data centers in different locations.Project VoldemortLinkedIn uses Project Voldemort as their solution for high-scalability key-value storage. It works as a distributed, fault-tolerant, and persistent hash table.Advantages of using Project Voldemort:Data is automatically replicated and partitioned over multiple servers.Storage and serialization plugins are available. Good single-node performance.List for Document-Based NoSQL DatabasesMongoDBMongoDB is an open-source, agile database that a wide range of companies use across different industries. It stores documents as JSON objects that can quickly change schemas according to your needs.Advantages of using MongoDB:Easy to scale from a single server to complex systems.Consistently provides high performance.High reliability thanks to replication and load balancing.Couchbase ServerCouchbase Server (known initially as Membase) is an open-source, distributed database solution. The primary design intention is to work with interactive applications to store large amounts of user data as JSON objects.Advantages of using Couchbase Server:Cluster management allows for quick scaling.Customizable replication, even between data centers.CouchDBCouchDB is an open-source database written in Erlang. It offersWhat is Membase? myNoSQL - Tumblr
. Command Line tools for Administering the NorthScale Membase Server - membase/membase-cliMembase monitor for ServerDensity GitHub
Comments
It has been just over a couple of weeks since the launch of membase.org, along with NorthScale’s partners at Zynga and NHN. In that time, we’ve been steadily increasing the postings on the wiki and responding to questions on the mailing list, the XMPP Chat and the IRC channel. When questions come up, they tend to be about how the membase database management system compares to other open source projects, what kind of client one would use, or what the pieces are when deployed.The World of NoSQLGenerally I think people get that at a high level, membase is a distributed, key-value database management system which is designed to scale both up and down, doing so without interrupting data services.Membase is an example of which DB is designed to deliver the same kind of performance apps need to be in the critical path of getting data for the user. Looking at the world of NoSQL, in my opinion, this was an underserved area.As a new area there is a lot of experimentation with NoSQL. Some are experimenting with a mix of online and analytics, others are experimenting with looser or eventual consistency, others are adding more data structure primitives on K/V stores and yet others are looking at data in more of a document-oriented way.We were aware of and even experimented with a number of these, but we ended up on a different path with membase, as we were trying to solve some very specific problems along with our partners. Apps
2025-04-05Had been built around memcached. Some portion of those apps absolutely needed SQL; for that, they already have Drizzle, MySQL or PostgreSQL, or Cubrid (Cubrid is big at NHN). Another portion of the same apps really didn’t need SQL, but they did need the replication, persistence, and data management that most of the SQL-based relational database management systems (RDBMS) provided, albeit with more complexity and management than was typically desired.Enter membase. We could take the existing infrastructure apps had been built around (memcached protocol and clients) and add the requisite level of durability, add rules for allowing admins and developers to control how that durability happens per item, and get smart about how it would run in a distributed fashion.How Does the Rubber Meet the Road?We needed to inject just a bit of intelligence into the system. The beauty of memcached is that the intelligence is, for the most part, on the client so the server can just be fast and dumb. We didn’t want to stray too far from that, but if you expect the system to be non-volatile, have replication and be able to grow and shrink while online, you need the system to have some concept of where things live. That led to vbuckets, which Dustin’s excellent blog covers.With a way to know where things live, we still need durability and replication along with those buckets. That’s where the membase engine comes in. The membase engine can be told to replicate a set of data from an
2025-04-05Alternate node. It can also be told, via a configuration map, who is authoritative for a given bucket.Further up the stack though, the clients won’t know about vbuckets. They know modulus or consistent hashing to connect to servers, so we needed something compatible. We already had moxi, which would give very simple clients intelligence around operation deduplication, intelligent connection sharing, what to do in the case of failures and even some non-coherent caching to speed things up even further. It wouldn’t take much more to teach moxi and it’s underlying configuration engine, libconflate, to know what to do with the same vbucket map. This would allow existing clients, and even existing applications to get the fast, distributed key/value database they need, so that’s what we did.ConclusionAt its core then, membase is the membase engine which implements persistence, replication and vbuckets to grow and shrink dynamically. To bring vbuckets to clients who don’t have that slight extra bit of intelligence, there is moxi. To migrate data between nodes without interrupting service, there is the vbucketmigrator. Keep an eye on membase.org as we fill out more details.
2025-04-10It accepts the the table but anytime i try to select the DOSBox file it just crashes the cheat menu I'm clearly doing something wrong her i just don't know what princessgaladriel What is cheating? Posts: 3 Joined: Thu Apr 27, 2023 2:02 pm Reputation: 0 Re: Elder Scrolls: Arena Post by princessgaladriel » Thu Apr 27, 2023 2:13 pm Hello Everyone.I am very new at cheat engine. I read the tutorial, and I downloaded both of the tables, but for some reason, I don't think the addresses are lining up. I followed the instructions and read what people are saying and I am just confused. Can someone help me, please? I have the Dosbox version of Elder Scrolls: Arena that I got from Steam. Mac2mnster What is cheating? Posts: 4 Joined: Tue Nov 21, 2017 7:53 pm Reputation: 0 Re: Elder Scrolls: Arena Post by Mac2mnster » Wed Jul 26, 2023 9:27 am princessgaladriel wrote: ↑Thu Apr 27, 2023 2:13 pmHello Everyone.I am very new at cheat engine. I read the tutorial, and I downloaded both of the tables, but for some reason, I don't think the addresses are lining up. I followed the instructions and read what people are saying and I am just confused. Can someone help me, please? I have the Dosbox version of Elder Scrolls: Arena that I got from Steam.Sorry if this is considered a necro. To get the Steam version to work, you'll need to do the following:- Run the game via Steam and load up a saved game. - Run CE - Select the "DOSBox 0.74, Cpu...." Process in your list. - Load the "Arena_new.Ct" fileThe "Membase" being used by default on this CT is for DOSBox version "0.74-2.1"; which is the version that GOG.com uses. You'll need to move them to the "Membase of DosBox 0.74" (Steam) version manually; it's under the "Pre-Defined Base Addresses..." section:- Select "Hitpoints Current" and hold "Shift" then press the down arrow until the "Skill Points to distribute" entry.- Click and drag the mouse from "Skill Points to distribute" (it should have the darker bar) to the "Membase of DosBox 0.74" entry. --> Make sure, when you're dragging with the mouse, that the black line is going through the middle of the "4" in "0.74". The memory address for it should not be visible as the black line should replace it.If you did it right, all
2025-04-24Editorial information provided by DB-EnginesNameCouchbase Originally called Membase Xexclude from comparisonEsgynDB Xexclude from comparisonTiDB Xexclude from comparisonDescriptionA distributed document store with integrated cache, a powerful search engine, in-built operational and analytical capabilities, and an embedded mobile databaseEnterprise-class SQL-on-Hadoop solution, powered by Apache TrafodionTiDB is an open source distributed SQL database that supports Hybrid Transactional/Analytical Processing (HTAP) workloads. It is MySQL compatible and features horizontal scalability, strong consistency, and high availability.Primary database modelDocument storeVector DBMSRelational DBMSRelational DBMSSecondary database modelsKey-value store originating from the former Membase product and supporting the Memcached protocolSpatial DBMS using the Geocouch extensionSearch engineTime Series DBMSVector DBMSWide column storeDocument storeScore15.05Rank#36 Overall#5 Document stores#2 Vector DBMSScore0.19Rank#317 Overall#140 Relational DBMSScore3.74Rank#71 Overall#38 Relational DBMSWebsitewww.couchbase.comwww.esgyn.cnpingcap.comTechnical documentationdocs.couchbase.comdocs.pingcap.com/tidb/stableDeveloperCouchbase, Inc.EsgynPingCAP, Inc.Initial release201120152016Current releaseServer: 7.6, March 2024; Mobile: 3.3, August 2024; Couchbase Capella (DBaaS), September 20248.2.0, July 2024License Commercial or Open SourceOpen Source Business Source License (BSL 1.1); Commercial licenses also availablecommercialOpen Source Apache 2.0Cloud-based only Only available as a cloud servicenononoDBaaS offerings (sponsored links) Database as a ServiceProviders of DBaaS offerings, please contact us to be listed.TiDB Cloud: Fully-managed TiDB Service. Bring everything great about TiDB to the cloud.Implementation languageC, C++, Go and ErlangC++, JavaGo, RustServer operating systemsLinuxOS XWindowsLinuxLinuxData schemeschema-freeyesyesTyping predefined data types such as float or dateyesyesyesXML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nonoSecondary indexesyesyesyesSQL Support of SQLSQL++, extends ANSI SQL to JSON for operational, transactional, and analytic use casesyesyesAPIs and other access methodsCLI ClientHTTP RESTKafka ConnectorNative language bindings for CRUD, Query, Search and Analytics APIsSpark ConnectorSpring DataADO.NETJDBCODBCGORMJDBCODBCProprietary protocolSQLAlchemySupported programming languages.NetCGoJavaJavaScript Node.jsKotlinPHPPythonRubyScalaAll languages supporting JDBC/ODBC/ADO.NetAdaCC#C++DDelphiEiffelErlangHaskellJavaJavaScript (Node.js)Objective-COCamlPerlPHPPythonRubySchemeTclServer-side scripts Stored proceduresFunctions and timers in JavaScript and UDFs in Java, Python, SQL++Java Stored ProceduresnoTriggersyes via the TAP protocolnonoPartitioning methods Methods for storing different data on different nodesAutomatic ShardingShardinghorizontal partitioning (by key range)Replication methods Methods for redundantly storing data on multiple nodesMulti-source replication including cross data center replicationSource-replica replicationMulti-source replication between multi datacentersUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.MapReduce Offers an API for user-defined Map/Reduce methodsyesyesyes with TiSpark ConnectorConsistency concepts Methods to ensure consistency in a distributed systemEventual ConsistencyImmediate Consistency selectable on a per-operation basisImmediate ConsistencyImmediate ConsistencyForeign keys Referential integritynoyesyes full support since version 6.6Transaction concepts Support to ensure data integrity after non-atomic manipulations of dataACIDACIDACIDConcurrency Support for concurrent manipulation of datayesyesyesDurability Support for making data persistentyesyesyesIn-memory capabilities Is there an option to define some or
2025-04-09Features of two or more different database types. This allows them to provide a solution for unique use cases where other database types are not suitable.List of NoSQL DatabasesBelow is a list of NoSQL databases, arranged into sections by database type:List of Key-Value DatabasesRedisRedis works as a data structure server that stores data in-memory. This means that Redis reads and modifies data from the main memory, but it also has built-in persistence. This feature allows saving data to disk so it can be reconstructed if the system restarts.Advantages of using Redis:Working in-memory allows for high performance and flexibility.Support for many different data types and programming languages.Easy to scale and supports automatic partitioning.Note: If you are interested in using Redis, check out our guides on how to install Redis on Ubuntu and Mac.AerospikeLike Redis, Aerospike is open-source, in-memory NoSQL database. Aerospike is optimized for online retail use thanks to its high performance and the ability to combine transaction data with analytics.Advantages of using Aerospike:Reliable performance with very low latency.A good ratio of price and performance makes it suitable for smaller businesses.RiakRiak stores key-value pairs in data objects it calls "buckets." It supports a wide range of data formats and emphasizes data stability and predictable performance.Advantages of using Riak:Key-value pairs are saved in clusters of three nodes, with the option of replicating the data to additional nodes for backup.Data can be stored in-memory, on disks, or both.Multi-datacenter replication allows to back up your data to data centers in different locations.Project VoldemortLinkedIn uses Project Voldemort as their solution for high-scalability key-value storage. It works as a distributed, fault-tolerant, and persistent hash table.Advantages of using Project Voldemort:Data is automatically replicated and partitioned over multiple servers.Storage and serialization plugins are available. Good single-node performance.List for Document-Based NoSQL DatabasesMongoDBMongoDB is an open-source, agile database that a wide range of companies use across different industries. It stores documents as JSON objects that can quickly change schemas according to your needs.Advantages of using MongoDB:Easy to scale from a single server to complex systems.Consistently provides high performance.High reliability thanks to replication and load balancing.Couchbase ServerCouchbase Server (known initially as Membase) is an open-source, distributed database solution. The primary design intention is to work with interactive applications to store large amounts of user data as JSON objects.Advantages of using Couchbase Server:Cluster management allows for quick scaling.Customizable replication, even between data centers.CouchDBCouchDB is an open-source database written in Erlang. It offers
2025-04-04