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@ -133,46 +133,6 @@
"url": "/devops",
"sidebar": {}
},
{
"seo": {
"title": "React Developer Roadmap: Learn to become a React developer",
"description": "Community driven, articles, resources, guides, interview questions, quizzes for react development. Learn to become a modern React developer by following the steps, skills, resources and guides listed in this roadmap.",
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"react developer roadmap",
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"what is react",
"react quiz",
"react interview questions"
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"description": "Everything that is there to learn about React and the ecosystem in 2020.",
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@ -197,8 +157,8 @@
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"latest",
"2018",
@ -213,6 +173,90 @@
"url": "/android",
"sidebar": {}
},
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"seo": {
"title": "DBA Roadmap: Learn to become a database administrator with PostgreSQL",
"description": "Community driven, articles, resources, guides, interview questions, quizzes for DevOps. Learn to become a modern DevOps engineer by following the steps, skills, resources and guides listed in this roadmap.",
"keywords": [
"guide to becoming a database administrator",
"guide to becoming a DBA",
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"postgresql roadmap",
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"db administrator skills",
"become dba",
"postgresql skills",
"modern dba skills",
"dba skills test",
"skills for dba",
"skills for database administrator",
"learn dba",
"what is dba",
"database administrator quiz",
"dba interview questions"
]
},
"title": "DB Administrator",
"description": "Step by step guide to becoming a modern PostgreSQL DBA",
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"path": "/roadmaps/5-postgresql-dba/landscape.md",
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"title": "React Developer Roadmap: Learn to become a React developer",
"description": "Community driven, articles, resources, guides, interview questions, quizzes for react development. Learn to become a modern React developer by following the steps, skills, resources and guides listed in this roadmap.",
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"title": "QA Roadmap: Learn to become a modern QA engineer",
@ -236,41 +280,15 @@
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"path": "/roadmaps/7-postgresql-dba/0-About/0-Summary.md"
}
]
}
}
]

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The intent of this guide is to give you an idea about the DBA landscape and to help guide your learning if you are confused. The roadmap is highly opinionated — neither, knowing everything listed in the roadmap, nor the order of items given in the roadmap is required to be followed in order to be a DBA.
## Learn basic RDBMS terms and concepts
Get basic understanding of Postgres key terms and basic RDBMS concepts.
- **Object model**: data types, columns, rows, tables, schemas, databases, queries.
- **Relational model**: domains, attributes, tuples, relations, constraints, NULL.
- **Databases high-level concepts**: ACID, MVCC, transactions, write-ahead log, query processing.
- **Links**:
- [Postgres Glossary](https://www.postgresql.org/docs/13/glossary.html)
- SQL and Relational Theory - Christopher J. Date, 2009
- Database Design and Relational Theory - Christopher J. Date, 2012
## Learn how to install and run PostgreSQL
Get practical skills of how to set up and run Postgres to get a working environment for further learning.
- Using package managers (APT, YUM, etc.)
- Using `docker`.
- Managing Postgres service using `systemd` (start, stop, restart, reload).
- Managing Postgres service using `pg_ctl`, or OS-specific tools (like `pg_ctlcluster`).
- Connect to Postgres using `psql`.
- Deploy database service in cloud environment (AWS, GCE, Azure, Heroku, DigitalOcean, etc...).
- **Links**:
- [Official download and install instructions](https://www.postgresql.org/download/)
- [Official Docker images](https://hub.docker.com/_/postgres)
## Learn SQL concepts
Get practical skills of how to create and manipulate database objects and how to execute queries using `psql` client.
- Understand basic data types.
- **DML queries**: querying data, modifying data, filtering data, joining tables.
- **Advanced topics**: transactions, CTE, subqueries, lateral join, grouping, set operations.
- **DDL queries**: managing tables and schemas (create, alter, drop).
- Import and export data using `COPY`.
- **Links**:
- [DB Fiddle](https://www.db-fiddle.com/)
- [PostgreSQL Tutorial](https://www.postgresqltutorial.com/)
- [PostgreSQL SQL Getting Started](https://www.postgresql.org/docs/current/tutorial-sql.html)
- [The SQL Language](https://www.postgresql.org/docs/current/sql.html)
## Learn how to configure Postgres
Get understanding of the main aspects of how Postgres could be configured. Deep understanding of Postgres internals is not yet necessary here.
- postgresql.conf:
- Resources usage
- Write-ahead Log
- Checkpoints and Background Writer
- Cost-based vacuum and auto-vacuum
- Replication
- Query planner
- Reporting, logging and statistics
- Adding extra extensions
- ...keep exploring other configuration options
- **Links**:
- [Postgresqlco.nf](http://postgresqlco.nf/)
## Learn Postgres security concepts
Get understanding about basic security concepts and common ways of how to deploy secure configurations.
- Authentication models, roles, pg_hba.conf, SSL settings.
- **Objects privileges**: grant/revoke, default privileges.
- **Advanced topics** - row-level security, selinux.
- **Links**:
- [Client authentication](https://www.postgresql.org/docs/current/client-authentication.html)
- [Roles and users managements](https://www.postgresql.org/docs/current/user-manag.html)
## Develop infrastructure DBA skills
Get practical skills of how to deploy, extend, maintain and support Postgres installations and 3rd-party Postgres ecosystem software.
- **Replication**: streaming replication, logical replication
- **Backup/recovery tools**:
- Built-in: `pg_dump`, `pg_dumpall`, `pg_restore`, `pg_basebackup`
- 3rd-party: `barman`, `pgbackrest`, `pg_probackup`, `WAL-G`
- Backup validation procedures
- **Upgrading procedures**
- Minor and major upgrades using `pg_upgrade`
- Upgrades using logical replication
- **Connection pooling**:
- `Pgbouncer`
- Alternatives: `Pgpool-II`, `Odyssey`, `Pgagroal`
- **Infrastructure monitoring**: `Prometheus`, `Zabbix`, other favourite monitoring solution
- **High availability and cluster management tools**:
- `Patroni`
- **Alternatives**: `Repmgr`, `Stolon`, `pg_auto_failover`, `PAF`
- **Applications Load Balancing and Service Discovery**: `Haproxy`, `Keepalived`, `Consul`, `Etcd`
- **Deploy Postgres on `Kubernetes`**: Simple `StatefulSet` setup, `HELM`, operators
- Resource usage and provisioning, capacity planning
## Learn how to automate routines
Get practical skills, learn automation tools and automate existing routine tasks.
- Automation using shell scripts or any other favourite language (`Bash`, `Python`, `Perl`, etc)
- Configuration management: `Ansible`, `Salt`, `Chef`, `Puppet`
## Develop application DBA skills
Learn theory and get practical skills of how applications should work with Postgres
- **Migrations**:
- practical patterns and antipatterns
- tools: `liquibase`, `sqitch`, language-specific tools
- Data import/export, bulk loading and processing
- **Queues**:
- practical patterns and anti-patterns
- `Skytools PGQ`
- Data partitioning and sharding patterns.
- Database normalization and normal forms.
- Books:
- The Art of PostgreSQL - Dimitri Fontaine, 2020
## Learn Postgres advanced topics
Here is important to continuously extend and develop existing knowledge about Postgres.
- **Low level internals**:
- Processes and memory architecture
- Vacuum processing
- Buffer management
- Lock management
- [Physical storage and file layout](https://www.postgresql.org/docs/current/storage.html)
- [System catalog](https://www.postgresql.org/docs/current/catalogs.html)
- **Fine-grained tuning**:
- Per-user, per-database settings
- [Storage parameters](https://www.postgresql.org/docs/current/sql-createtable.html#SQL-CREATETABLE-STORAGE-PARAMETERS)
- Workload-dependant tuning: OLTP, OLAP, HTAP
- **Advanced SQL topics**:
- PL/pgSQL, procedures and functions, triggers
- Aggregate and window functions
- Recursive CTE
- **Links**:
- [The Internals of PostgreSQL](http://www.interdb.jp/pg/index.html) for database administrators and system developers
- [PL/pgSQL Guide](https://www.postgresql.org/docs/current/plpgsql.html)
## Learn Postgres troubleshooting techniques
Get basic understanding about troubleshooting tools and get practical skills of how to detect and resolve problems.
- **Operating system tools**
- `top` (`htop`, `atop`)
- `sysstat`
- `iotop`
- **Postgres system views**
- `pg_stat_activity`
- `pg_stat_statements`
- **Postgres tools**
- `pgcenter` - *personal recommendation*
- **Query analyzing**:
- [EXPLAIN](https://www.postgresql.org/docs/current/sql-explain.html)
- [Depesz](https://explain.depesz.com/) online EXPLAIN visualization tool
- [PEV](https://tatiyants.com/pev/#/plans) online EXPLAIN visualization tool
- [Tensor](https://explain.tensor.ru/) online EXPLAIN visualization tool, RU language only
- **Log analyzing**:
- `pgBadger`
- Ad-hoc analyzing using `grep`, `awk`, `sed`, etc.
- **External tracing/profiling tools**: `gdb`, `strace`, `perf-tools`, `ebpf`, core dumps
- **Troubleshooting methods**: USE, RED, Golden signals
- **Links**:
- [Linux Performance](http://www.brendangregg.com/linuxperf.html) by Brendan Gregg
- [USE Method](http://www.brendangregg.com/usemethod.html)
## Learn SQL optimization technics
Get understanding and practical skills of how to optimize SQL queries.
- **Indexes, and their use cases**: B-tree, Hash, GiST, SP-GiST, GIN, BRIN
- SQL queries patterns and anti-patterns
- SQL schema design patterns and anti-patterns
- **Links**:
- [Use the Index, Luke](https://use-the-index-luke.com/) - a Guide to Database Performance for Developers
- **Books**:
- SQL Antipatterns: Avoiding the Pitfalls of Database Programming - Bill Karwin, 2010
## Develop architect skills
Get deeper understanding of Postgres use cases and where Postgres is suitable and where is not.
- **Postgres forks and extensions**: `Greenplum`, `Timescaledb`, `Citus`, `Postgres-XL`, etc.
- RDBMS in general, benefits and limitations
- Differences between Postgres and other RDBMS and NoSQL databases
## Develop Postgres hacker skills
Get involved to Postgres community and contribute to Postgres; be a useful member of Postgres, and the open source community; use personal experience to help other people.
- Daily reading and answering in [mailing lists](https://www.postgresql.org/list/)
- pgsql-general
- pgsql-admin
- pgsql-performance
- pgsql-hackers
- pgsql-bugs
- Reviewing patches
- Writing patches, attending in [Commitfests](https://commitfest.postgresql.org/)
<br />
<br />
<br />

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{
"seo": {
"title": "DBA Roadmap: Learn to become a database administrator with PostgreSQL",
"description": "Community driven, articles, resources, guides, interview questions, quizzes for DevOps. Learn to become a modern DevOps engineer by following the steps, skills, resources and guides listed in this roadmap.",
"keywords": [
"guide to becoming a database administrator",
"guide to becoming a DBA",
"dba roadmap",
"db administrator roadmap",
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"db administrator skills",
"become dba",
"postgresql skills",
"modern dba skills",
"dba skills test",
"skills for dba",
"skills for database administrator",
"learn dba",
"what is dba",
"database administrator quiz",
"dba interview questions"
]
},
"title": "DB Administrator",
"description": "Step by step guide to becoming a modern PostgreSQL DBA",
"featuredDescription": "Step by step guide to becoming a modern PostgreSQL DBA in 2020",
"path": "./landscape.md",
"resources": "./resources.md",
"author": {
"name": "Alexey Lesovsky",
"url": "https://github.com/lesovsky"
},
"communityResource": true,
"isTextHeavy": true,
"featured": false,
"detailed": false,
"versions": []
}

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@ -1,173 +0,0 @@
#### PostgreSQL DBA Roadmap
##### Learn basic RDBMS terms and concepts
Get basic understanding of Postgres key terms and basic RDBMS concepts.
- Object model: data types, columns, rows, tables, schemas, databases, queries.
- Relational model: domains, attributes, tuples, relations, constraints, NULL.
- Databases high-level concepts: ACID, MVCC, transactions, write-ahead log, query processing.
- Links:
- [Postgres Glossary](https://www.postgresql.org/docs/13/glossary.html)
- SQL and Relational Theory - Christopher J. Date, 2009
- Database Design and Relational Theory - Christopher J. Date, 2012
##### Learn how to install and run PostgreSQL
Get practical skills of how to set up and run Postgres to get a working environment for further learning.
- using package managers (APT, YUM, etc.)
- using `Docker`.
- managing Postgres service using `systemd` (start, stop, restart, reload).
- managing Postgres service using `pg_ctl`, or OS-specific tools (like `pg_ctlcluster`).
- connect to Postgres using `psql`.
- deploy database service in cloud environment (AWS, GCE, Azure, Heroku, DigitalOcean, etc...).
- Links:
- [Official download and install instructions](https://www.postgresql.org/download/)
- [Official Docker images](https://hub.docker.com/_/postgres)
##### Learn SQL concepts
Get practical skills of how to create and manipulate database objects and how to execute queries using `psql` client.
- Understanding basic data types.
- DML queries: querying data, modifying data, filtering data, joining tables.
- advanced topics: transactions, CTE, subqueries, lateral join, grouping, set operations.
- DDL queries: managing tables and schemas (create, alter, drop).
- Import and export data using `COPY`.
- Links:
- [DB Fiddle](https://www.db-fiddle.com/)
- [PostgreSQL Tutorial](https://www.postgresqltutorial.com/)
- [PostgreSQL SQL Getting Started](https://www.postgresql.org/docs/current/tutorial-sql.html)
- [The SQL Language](https://www.postgresql.org/docs/current/sql.html)
##### Learn how to configure Postgres
Get understanding of the main aspects of how Postgres could be configured. Deep understanding of Postgres internals is not yet necessary here.
- postgresql.conf:
- resources usage
- write-ahead log
- checkpoints and background writer
- cost-based vacuum and autovacuum
- replication
- query planner
- reporting, logging and statistics
- adding extra extensions
- ... keep exploring other configuration options
Links:
- [Postgresqlco.nf](http://postgresqlco.nf/)
##### Learn Postgres security concepts
Get understanding about basic security concepts and common ways of how to deploy secure configurations.
- Authentication models, roles, pg_hba.conf, SSL settings.
- Objects privileges: grant/revoke, default privileges.
- Advanced topics - row-level security, selinux.
- Links:
- [Client authentication](https://www.postgresql.org/docs/current/client-authentication.html)
- [Roles and users managements](https://www.postgresql.org/docs/current/user-manag.html)
##### Develop infrastructure DBA skills
Get practical skills of how to deploy, extend, maintain and support Postgres installations and 3rd-party Postgres ecosystem software.
- Replication: streaming replication, logical replication
- Backup/recovery tools:
- Built-in: `pg_dump`, `pg_dumpall`, `pg_restore`, `pg_basebackup`
- 3rd-party: `barman`, `pgbackrest`, `pg_probackup`, `WAL-G`
- Backup validation procedures
- Upgrading procedures
- minor and major upgrades using `pg_upgrade`
- upgrades using logical replication
- Connection pooling:
- `Pgbouncer`
- alternatives: `Pgpool-II`, `Odyssey`, `Pgagroal`
- Infrastructure monitoring: `Prometheus`, `Zabbix`, other favourite monitoring solution
- High availability and cluster management tools:
- `Patroni`
- alternatives: `Repmgr`, `Stolon`, `pg_auto_failover`, `PAF`
- Applications Load Balancing and Service Discovery: `Haproxy`, `Keepalived`, `Consul`, `Etcd`
- Deploy Postgres on `Kubernetes`: simple `StatefulSet` setup, `HELM`, operators
- Resource usage and provisioning, capacity planning
##### Learn how to automate routines
Get practical skills, learn automation tools and automate existing routine tasks.
- Automation using shell scripts or any other favourite language (`Bash`, `Python`, `Perl`, etc)
- Configuration management: `Ansible`, `Salt`, `Chef`, `Puppet`
##### Develop application DBA skills
Learn theory and get practical skills of how applications should work with Postgres
- Migrations:
- practical patterns and antipatterns
- tools: `liquibase`, `sqitch`, language-specific tools
- Data import/export, bulk loading and processing
- Queues:
- practical patterns and anti-patterns
- `Skytools PGQ`
- Data partitioning and sharding patterns.
- Database normalization and normal forms.
- Books:
- The Art of PostgreSQL - Dimitri Fontaine, 2020
##### Learn Postgres advanced topics
Here is important to continuously extend and develop existing knowledge about Postgres.
- Low level internals:
- Processes and memory architecture
- Vacuum processing
- Buffer management
- Lock management
- [Physical storage and file layout](https://www.postgresql.org/docs/current/storage.html)
- [System catalog](https://www.postgresql.org/docs/current/catalogs.html)
- Fine-grained tuning:
- Per-user, per-database settings
- [Storage parameters](https://www.postgresql.org/docs/current/sql-createtable.html#SQL-CREATETABLE-STORAGE-PARAMETERS)
- Workload-dependant tuning: OLTP, OLAP, HTAP
- Advanced SQL topics:
- PL/pgSQL, procedures and functions, triggers
- aggregate and window functions
- recursive CTE
- Links:
- [The Internals of PostgreSQL](http://www.interdb.jp/pg/index.html) for database administrators and system developers
- [PL/pgSQL Guide](https://www.postgresql.org/docs/current/plpgsql.html)
##### Learn Postgres troubleshooting technics
Get basic understanding about troubleshooting tools and get practical skills of how to detect and resolve problems.
- Operating system tools
- `top` (`htop`, `atop`)
- `sysstat`
- `iotop`
- Postgres system views
- `pg_stat_activity`
- `pg_stat_statements`
- Postgres tools
- `pgcenter` - *personal recommendation*
- Query analyzing:
- [EXPLAIN](https://www.postgresql.org/docs/current/sql-explain.html)
- [Depesz](https://explain.depesz.com/) online EXPLAIN visualization tool
- [PEV](https://tatiyants.com/pev/#/plans) online EXPLAIN visualization tool
- [Tensor](https://explain.tensor.ru/) online EXPLAIN visualization tool, RU language only
- Log analyzing:
- `pgBadger`
- Ad-hoc analyzing using `grep`, `awk`, `sed`, etc.
- External tracing/profiling tools: `gdb`, `strace`, `perf-tools`, `ebpf`, core dumps
- Troubleshooting methods: USE, RED, Golden signals
- Links:
- [Linux Performance](http://www.brendangregg.com/linuxperf.html) by Brendan Gregg
- [USE Method](http://www.brendangregg.com/usemethod.html)
##### Learn SQL optimization technics
Get understanding and practical skills of how to optimize SQL queries.
- Indexes, and their use cases: B-tree, Hash, GiST, SP-GiST, GIN, BRIN
- SQL queries patterns and anti-patterns
- SQL schema design patterns and anti-patterns
- Links:
- [Use the Index, Luke](https://use-the-index-luke.com/) - a Guide to Database Performance for Developers
- Books:
- SQL Antipatterns: Avoiding the Pitfalls of Database Programming - Bill Karwin, 2010
##### Develop architect skills
Get deeper understanding of Postgres use cases and where Postgres is suitable and where is not.
- Postgres forks and extensions: `Greenplum`, `Timescaledb`, `Citus`, `Postgres-XL`, etc.
- RDBMS in general, benefits and limitations
- Differences between Postgres and other RDBMS and NoSQL databases
##### Develop Postgres hacker skills
Get involved to Postgres community and contribute to Postgres; be a useful member of Postgres, and the open source community; use personal experience to help other people.
- daily reading and answering in [mailing lists](https://www.postgresql.org/list/)
- pgsql-general
- pgsql-admin
- pgsql-performance
- pgsql-hackers
- pgsql-bugs
- reviewing patches
- writing patches, attending in [Commitfests](https://commitfest.postgresql.org/)

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## PostgreSQL DBA Roadmap
Roadmap to becoming a PostgreSQL Database Administrator

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{
"title": "PostgreSQL DBA Roadmap",
"description": "Step by step guide to becoming a modern PostgreSQL DBA",
"featuredDescription": "Step by step guide to becoming a modern PostgreSQL DBA in 2020",
"path": "./landscape.md",
"resources": "./resources.md",
"author": {
"name": "Alexey Lesovsky",
"url": "https://github.com/lesovsky"
},
"featured": false,
"detailed": false,
"versions": []
}

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public/sitemap.xml
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@ -3,7 +3,7 @@
<url>
<loc>https://roadmap.sh/frontend</loc>
<changefreq>monthly</changefreq>
<lastmod>2020-05-26T18:13:35.798Z</lastmod>
<lastmod>2020-07-20T21:01:02.296Z</lastmod>
<priority>1.0</priority>
</url>
<url>
@ -18,18 +18,24 @@
<lastmod>2020-01-29T07:49:29.706Z</lastmod>
<priority>1.0</priority>
</url>
<url>
<loc>https://roadmap.sh/react</loc>
<changefreq>monthly</changefreq>
<lastmod>2020-07-18T00:11:27.434Z</lastmod>
<priority>1.0</priority>
</url>
<url>
<loc>https://roadmap.sh/android</loc>
<changefreq>monthly</changefreq>
<lastmod>2020-06-11T15:47:02.224Z</lastmod>
<priority>1.0</priority>
</url>
<url>
<loc>https://roadmap.sh/postgresql-dba</loc>
<changefreq>monthly</changefreq>
<lastmod>2020-09-19T14:09:45.689Z</lastmod>
<priority>1.0</priority>
</url>
<url>
<loc>https://roadmap.sh/react</loc>
<changefreq>monthly</changefreq>
<lastmod>2020-07-18T00:11:27.434Z</lastmod>
<priority>1.0</priority>
</url>
<url>
<loc>https://roadmap.sh/qa</loc>
<changefreq>monthly</changefreq>
@ -186,6 +192,12 @@
<lastmod>2017-10-28T17:00:00.860Z</lastmod>
<priority>1.0</priority>
</url>
<url>
<loc>https://roadmap.sh/guides/proxy-servers</loc>
<changefreq>monthly</changefreq>
<lastmod>2020-07-24T12:40:18</lastmod>
<priority>1.0</priority>
</url>
<url>
<loc>https://roadmap.sh/about</loc>
<changefreq>monthly</changefreq>
@ -231,7 +243,7 @@
<url>
<loc>https://roadmap.sh/watch</loc>
<changefreq>monthly</changefreq>
<lastmod>2020-07-17T20:43:20.585Z</lastmod>
<lastmod>2020-09-19T08:07:30.722Z</lastmod>
<priority>1.0</priority>
</url>
</urlset>