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database-foundation.md	https://github.com/anhthii/database-notes/blob/master/database-foundation.md
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database-research.pdf	https://github.com/anhthii/database-notes/blob/master/database-research.pdf
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mongodb.md	https://github.com/anhthii/database-notes/blob/master/mongodb.md
mongodb.md	https://github.com/anhthii/database-notes/blob/master/mongodb.md
nosql.md	https://github.com/anhthii/database-notes/blob/master/nosql.md
nosql.md	https://github.com/anhthii/database-notes/blob/master/nosql.md
postgresql.md	https://github.com/anhthii/database-notes/blob/master/postgresql.md
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readme.md	https://github.com/anhthii/database-notes/blob/master/readme.md
readme.md	https://github.com/anhthii/database-notes/blob/master/readme.md
relational_vs_nosql.md	https://github.com/anhthii/database-notes/blob/master/relational_vs_nosql.md
relational_vs_nosql.md	https://github.com/anhthii/database-notes/blob/master/relational_vs_nosql.md
scaling.md	https://github.com/anhthii/database-notes/blob/master/scaling.md
scaling.md	https://github.com/anhthii/database-notes/blob/master/scaling.md
storage_engine.md	https://github.com/anhthii/database-notes/blob/master/storage_engine.md
storage_engine.md	https://github.com/anhthii/database-notes/blob/master/storage_engine.md
README	https://github.com/anhthii/database-notes
Collected resources about database	https://github.com/anhthii/database-notes#collected-resources-about-database
1. Factors to consider when choosing a database system	https://github.com/anhthii/database-notes#1-factors-to-consider-when-choosing-a-database-system
1.1. Storage engine	https://github.com/anhthii/database-notes#11-storage-engine
Btree vs LSM Benchmark [3]	https://github.com/anhthii/database-notes#btree-vs-lsm-benchmark-3
Representatives	https://github.com/anhthii/database-notes#representatives
Take aways	https://github.com/anhthii/database-notes#take-aways
1.2. Types of databases	https://github.com/anhthii/database-notes#12-types-of-databases
1.2.1 Relational database - RDBMS [4]	https://github.com/anhthii/database-notes#121-relational-database---rdbms--4
1.2.1.1 ACID	https://github.com/anhthii/database-notes#1211-acid
1.2.2. NoSQL	https://github.com/anhthii/database-notes#122-nosql
1.2.2.1. CAP theorem	https://github.com/anhthii/database-notes#1221-cap-theorem
1.2.2.2. BASE properties of NoSQL	https://github.com/anhthii/database-notes#1222-base-properties-of-nosql
1.2.2.3. Conceptual techniques of NoSQL [5]	https://github.com/anhthii/database-notes#1223-conceptual-techniques-of-nosql-5
1.2.2.3. Types of data models	https://github.com/anhthii/database-notes#1223-types-of-data-models
1. Key-value	https://github.com/anhthii/database-notes#1-key-value
2. Document-oriented	https://github.com/anhthii/database-notes#2-document-oriented
3. Column-family	https://github.com/anhthii/database-notes#3-column-family
4. Graph-Like Data Models [10]	https://github.com/anhthii/database-notes#4-graph-like-data-models-10
1.2.2.4. Considerations for relational vs. NoSQL systems [4]	https://github.com/anhthii/database-notes#1224-considerations-for-relational-vs-nosql-systems-4
1.2.3. NewSQL [4]	https://github.com/anhthii/database-notes#123-newsql-4
1.3. Reliable, Scalable, and Maintainable [4]	https://github.com/anhthii/database-notes#13-reliable-scalable-and-maintainable-4
Reliability	https://github.com/anhthii/database-notes#reliability
Scalability	https://github.com/anhthii/database-notes#scalability
Maintainability	https://github.com/anhthii/database-notes#maintainability
2. Databases at scale	https://github.com/anhthii/database-notes#2-databases-at-scale
2.1. Caching [11]	https://github.com/anhthii/database-notes#21-caching--11
2.1.1. Types of database caching	https://github.com/anhthii/database-notes#211-types-of-database-caching
2.1.2. Caching strategies	https://github.com/anhthii/database-notes#212-caching-strategies
1. Cache-Aside (Lazy loading)	https://github.com/anhthii/database-notes#1-cache-aside-lazy-loading
2. Write - through	https://github.com/anhthii/database-notes#2-write---through
2.1.3. TTL	https://github.com/anhthii/database-notes#213-ttl
2.1.4. Evictions	https://github.com/anhthii/database-notes#214-evictions
2.2. Indexing	https://github.com/anhthii/database-notes#22-indexing
2.2.1. Single index [17]	https://github.com/anhthii/database-notes#221-single-index-17
2.2.2. Composite index	https://github.com/anhthii/database-notes#222-composite-index
2.3. Partitioning	https://github.com/anhthii/database-notes#23-partitioning
3.4. Horizontal scaling: sharding and replication	https://github.com/anhthii/database-notes#34-horizontal-scaling-sharding-and-replication
3.4.1. Replication	https://github.com/anhthii/database-notes#341-replication
3.4.2. Sharding	https://github.com/anhthii/database-notes#342-sharding
When should we shard?	https://github.com/anhthii/database-notes#when-should-we-shard
Strategies of sharding	https://github.com/anhthii/database-notes#strategies-of-sharding
3. Caveats for working with a database system	https://github.com/anhthii/database-notes#3-caveats-for-working-with-a-database-system
3.1. Connection pool	https://github.com/anhthii/database-notes#31-connection-pool
3.1. RDBMS	https://github.com/anhthii/database-notes#31-rdbms
3.1.1. Concurrency problems	https://github.com/anhthii/database-notes#311-concurrency-problems
3.1.1.1. Dirty Read	https://github.com/anhthii/database-notes#3111-dirty-read
3.1.1.2. Phantom Read	https://github.com/anhthii/database-notes#3112-phantom-read
3.1.1.3. Lost updates	https://github.com/anhthii/database-notes#3113-lost-updates
3.1.1.4. Inconsistent Retrievals	https://github.com/anhthii/database-notes#3114-inconsistent-retrievals
3.1.2. Solving concurrency problems with Locking	https://github.com/anhthii/database-notes#312-solving-concurrency-problems-with-locking
3.1.2.1. Optimistic lock	https://github.com/anhthii/database-notes#3121-optimistic-lock
3.1.2.2. Pessmistic lock	https://github.com/anhthii/database-notes#3122-pessmistic-lock
Exclusive and shared locks	https://github.com/anhthii/database-notes#exclusive-and-shared-locks
3.1.2. Deadlock	https://github.com/anhthii/database-notes#312-deadlock
3.1.3. N + 1 query problem	https://github.com/anhthii/database-notes#313-n--1-query-problem
4. Data warehouse	https://github.com/anhthii/database-notes#4-data-warehouse
5. Cloud-native database	https://github.com/anhthii/database-notes#5-cloud-native-database
6. References	https://github.com/anhthii/database-notes#6-references
	https://github.com/anhthii/database-notes#collected-resources-about-database
https://dzone.com/articles/database-architectures-amp-use-cases-explained	https://dzone.com/articles/database-architectures-amp-use-cases-explained
	https://github.com/anhthii/database-notes#1-factors-to-consider-when-choosing-a-database-system
	https://github.com/anhthii/database-notes#11-storage-engine
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https://www.youtube.com/playlist?list=PLzzVuDSjP25QT0H605qxlcmMy_GBTHi8X	https://www.youtube.com/playlist?list=PLzzVuDSjP25QT0H605qxlcmMy_GBTHi8X
https://yetanotherdevblog.com/lsm/	https://yetanotherdevblog.com/lsm/
http://www.benstopford.com/2015/02/14/log-structured-merge-trees/	http://www.benstopford.com/2015/02/14/log-structured-merge-trees/
	https://github.com/anhthii/database-notes#btree-vs-lsm-benchmark-3
	https://github.com/wiredtiger/wiredtiger/wiki/attachments/LSM_btree_Throughput.png
	https://github.com/anhthii/database-notes#representatives
	https://camo.githubusercontent.com/63be2b540dd59cfd669f603a5dadeee3afb8449559bbdaef5b21ab5aafe64b8f/68747470733a2f2f6d69726f2e6d656469756d2e636f6d2f6d61782f323933322f312a725167364a2d4d58307a414c6453694b4f3977596b772e706e67
	https://github.com/anhthii/database-notes#take-aways
	https://github.com/anhthii/database-notes#12-types-of-databases
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	https://github.com/anhthii/database-notes#121-relational-database---rdbms--4
	https://github.com/anhthii/database-notes#1211-acid
	https://github.com/anhthii/database-notes#122-nosql
	https://github.com/anhthii/database-notes#1221-cap-theorem
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-18-18-07-48.png
Databases categorized in CAP Theorem	https://medium.com/system-design-blog/cap-theorem-1455ce5fc0a0
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-18-18-11-26.png
Blockchain at BerkeleyX CS198.2x	https://www.youtube.com/watch?v=K12oQCzjPxE&t=5s
quorum	https://en.wikipedia.org/wiki/Quorum_(distributed_computing)#:~:text=A%20quorum%20is%20the%20minimum,operation%20in%20a%20distributed%20system.
	https://github.com/anhthii/database-notes#1222-base-properties-of-nosql
	https://github.com/anhthii/database-notes#1223-conceptual-techniques-of-nosql-5
	https://github.com/anhthii/database-notes/blob/master/images/2020-10-15-10-33-23.png
	https://github.com/anhthii/database-notes#1223-types-of-data-models
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-18-17-22-30.png
	https://github.com/anhthii/database-notes#1-key-value
	https://github.com/anhthii/database-notes#2-document-oriented
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mongodb.md	https://github.com/anhthii/database-notes/blob/master/mongodb.md
	https://github.com/anhthii/database-notes#3-column-family
	https://github.com/anhthii/database-notes/blob/master/images/2020-10-15-10-41-34.png
cassandra.md	https://github.com/anhthii/database-notes/blob/master/cassandra.md
	https://github.com/anhthii/database-notes#4-graph-like-data-models-10
	https://camo.githubusercontent.com/cc9921b978a22a2403a01f30fb65845084911415f4f8e2d67066039967cb6d26/68747470733a2f2f626c6f67732e626d632e636f6d2f77702d636f6e74656e742f75706c6f6164732f323031392f30332f4e656f346a2d30312e706e67
	https://github.com/anhthii/database-notes#1224-considerations-for-relational-vs-nosql-systems-4
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-11-12-43.png
	https://github.com/anhthii/database-notes#123-newsql-4
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-18-20-53-08.png
	https://github.com/anhthii/database-notes#13-reliable-scalable-and-maintainable-4
	https://github.com/anhthii/database-notes/blob/master/images/foundation_of_data_systems.png
	https://github.com/anhthii/database-notes#reliability
	https://github.com/anhthii/database-notes#scalability
	https://github.com/anhthii/database-notes#maintainability
database-foundation.md	https://github.com/anhthii/database-notes/blob/master/database-foundation.md
	https://github.com/anhthii/database-notes#2-databases-at-scale
	https://github.com/anhthii/database-notes#21-caching--11
	https://github.com/anhthii/database-notes#211-types-of-database-caching
	https://github.com/anhthii/database-notes#212-caching-strategies
	https://github.com/anhthii/database-notes#1-cache-aside-lazy-loading
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-18-21-15-56.png
	https://github.com/anhthii/database-notes#2-write---through
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-18-21-17-15.png
	https://github.com/anhthii/database-notes#213-ttl
	https://github.com/anhthii/database-notes#214-evictions
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-18-21-19-04.png
	https://github.com/anhthii/database-notes#22-indexing
	https://github.com/anhthii/database-notes#221-single-index-17
	https://github.com/anhthii/database-notes#222-composite-index
	https://github.com/anhthii/database-notes/blob/master/images/indexing.png
	https://github.com/anhthii/database-notes#23-partitioning
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-15-25-26.png
	https://github.com/anhthii/database-notes#34-horizontal-scaling-sharding-and-replication
	https://github.com/anhthii/database-notes#341-replication
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-17-08-49.png
	https://github.com/anhthii/database-notes#342-sharding
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-16-56-48.png
	https://github.com/anhthii/database-notes#when-should-we-shard
	https://github.com/anhthii/database-notes#strategies-of-sharding
https://www.digitalocean.com/community/tutorials/understanding-database-sharding	https://www.digitalocean.com/community/tutorials/understanding-database-sharding
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-17-21-23.png
	https://github.com/anhthii/database-notes#3-caveats-for-working-with-a-database-system
	https://github.com/anhthii/database-notes#31-connection-pool
	https://github.com/anhthii/database-notes/blob/master/images/pool.png
	https://github.com/anhthii/database-notes#31-rdbms
	https://github.com/anhthii/database-notes#311-concurrency-problems
	https://github.com/anhthii/database-notes#3111-dirty-read
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-09-31-29.png
	https://github.com/anhthii/database-notes#3112-phantom-read
	https://camo.githubusercontent.com/cd5fe83ee407454f7f73df5e02cc74fbb435f9ed6ecf4eceddd056283ce815a7/68747470733a2f2f692e737461636b2e696d6775722e636f6d2f61437465772e706e67
source	https://vladmihalcea.com/non-repeatable-read/
	https://github.com/anhthii/database-notes#3113-lost-updates
	https://camo.githubusercontent.com/7fe1e9d8a54b085ad32215fb4eefbaf6306fd5fd9149d0523a219a5fabaa3b7e/68747470733a2f2f766c61646d6968616c6365612e636f6d2f77702d636f6e74656e742f75706c6f6164732f323031342f30392f6c6f737475706461746573696e676c65726571756573747472616e73616374696f6e732e706e67
Source: Vlad Mihalcea's blog.	https://medium.com/system-design-blog/cap-theorem-1455ce5fc0a0
	https://github.com/anhthii/database-notes#3114-inconsistent-retrievals
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-09-51-23.png
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-09-47-50.png
	https://github.com/anhthii/database-notes#312-solving-concurrency-problems-with-locking
	https://github.com/anhthii/database-notes#3121-optimistic-lock
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-08-11-48.png
	https://github.com/anhthii/database-notes#3122-pessmistic-lock
	https://github.com/anhthii/database-notes#exclusive-and-shared-locks
	https://github.com/anhthii/database-notes/blob/master/images/readme.md/2020-10-19-07-27-12.png
	https://github.com/anhthii/database-notes#312-deadlock
	https://github.com/anhthii/database-notes#313-n--1-query-problem
	https://github.com/anhthii/database-notes#4-data-warehouse
	https://github.com/anhthii/database-notes#5-cloud-native-database
	https://github.com/anhthii/database-notes#6-references
https://blog.yugabyte.com/a-busy-developers-guide-to-database-storage-engines-the-basics/	https://blog.yugabyte.com/a-busy-developers-guide-to-database-storage-engines-the-basics/
https://medium.com/@ckayay/how-to-pick-the-right-database-c2539efe2589	https://medium.com/@ckayay/how-to-pick-the-right-database-c2539efe2589
https://github.com/wiredtiger/wiredtiger/wiki/Btree-vs-LSM	https://github.com/wiredtiger/wiredtiger/wiki/Btree-vs-LSM
https://docs.microsoft.com/en-us/dotnet/architecture/cloud-native/relational-vs-nosql-data	https://docs.microsoft.com/en-us/dotnet/architecture/cloud-native/relational-vs-nosql-data
https://highlyscalable.wordpress.com/2012/03/01/nosql-data-modeling-techniques/	https://highlyscalable.wordpress.com/2012/03/01/nosql-data-modeling-techniques/
https://stackoverflow.com/a/999447	https://stackoverflow.com/a/999447
https://www.amazon.com/MongoDB-Action-Kyle-Banker/dp/1935182870	https://www.amazon.com/MongoDB-Action-Kyle-Banker/dp/1935182870
https://github.com/donnemartin/system-design-primer#eventual-consistency	https://github.com/donnemartin/system-design-primer#eventual-consistency
https://www.amazon.com/Hands-Software-Engineering-Golang-programming/dp/1838554491	https://www.amazon.com/Hands-Software-Engineering-Golang-programming/dp/1838554491
https://www.amazon.com/Designing-Data-Intensive-Applications-Reliable-Maintainable/dp/1449373321	https://www.amazon.com/Designing-Data-Intensive-Applications-Reliable-Maintainable/dp/1449373321
https://d0.awsstatic.com/whitepapers/Database/database-caching-strategies-using-redis.pdf	https://d0.awsstatic.com/whitepapers/Database/database-caching-strategies-using-redis.pdf
https://stackoverflow.com/a/58952004	https://stackoverflow.com/a/58952004
https://blog.couchbase.com/optimistic-or-pessimistic-locking-which-one-should-you-pick/	https://blog.couchbase.com/optimistic-or-pessimistic-locking-which-one-should-you-pick/
https://www.javatpoint.com/dbms-concurrency-control#:~:text=Inconsistent%20Retrievals%20Problem%20is%20also,the%20Inconsistent%20Retrievals%20Problem%20occurs	https://www.javatpoint.com/dbms-concurrency-control#:~:text=Inconsistent%20Retrievals%20Problem%20is%20also,the%20Inconsistent%20Retrievals%20Problem%20occurs
https://secure.phabricator.com/book/phabcontrib/article/n_plus_one/	https://secure.phabricator.com/book/phabcontrib/article/n_plus_one/
https://stackoverflow.com/a/22825825	https://stackoverflow.com/a/22825825
https://medium.com/@User3141592/single-vs-composite-indexes-in-relational-databases-58d0eb045cbe#:~:text=Like%20a%20single%20index%2C%20a,a%20concatenation%20of%20multiple%20fields.&text=will%20NOT%20benefit%20from%20this,position%20is%20the%20second%20field	https://medium.com/@User3141592/single-vs-composite-indexes-in-relational-databases-58d0eb045cbe#:~:text=Like%20a%20single%20index%2C%20a,a%20concatenation%20of%20multiple%20fields.&text=will%20NOT%20benefit%20from%20this,position%20is%20the%20second%20field
https://dev.mysql.com/doc/mysql-partitioning-excerpt/5.7/en/partitioning-overview.html	https://dev.mysql.com/doc/mysql-partitioning-excerpt/5.7/en/partitioning-overview.html
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