python-zstandard
pgBackRest
python-zstandard | pgBackRest | |
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1 | 13 | |
464 | 2,221 | |
- | 2.6% | |
7.3 | 9.2 | |
30 days ago | 8 days ago | |
C | C | |
BSD 3-clause "New" or "Revised" License | GNU General Public License v3.0 or later |
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python-zstandard
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I'm trying to compress data with Python and Zstd library but can't figure out what I'm doing wrong. Any Help?
I'm working on file formats called tif file which are on average a gigabyte of size. A middle step is to compress those files and I looked it up and found this and tried to use it. But unfortunately, the size of the compressed file is barely 100MB less than the original one and it takes like 1.5 minutes to compress it. I'm reading the entire file in memory instead of streaming it but I don't really think that could result in compression size. I'm also using high enough level of compression(20 level) but it still won't give me good results.
pgBackRest
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pgBackRest: PostgreSQL S3 backups
This tutorial explains how to backup PostgreSQL database using pgBackRest and S3.
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Anything can be a message queue if you use it wrongly enough
This isn't theoretical; many companies do PostgreSQL async 1:N physical replication, by using e.g. https://pgbackrest.org/ to have the primary push WAL segment files (a.k.a. "the last n milliseconds of packets" in the write-ahead log) as objects to S3, and then to have all read-replicas fetch from S3 and replay.
> You could do even better if you out-of-band signal the readiness so you do not need to poll while idle.
S3 and its clones have "object lifecycle notifications", where you can be informed by a push-based mechanism whenever a new object is put into the bucket.
But — what do you have to do, to get these notifications?
Subscribe to a message queue that S3 puts them into.
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Kubernetes postgres backups
I haven't explored the territory in awhile but for bare-metal, you can't go wrong with Percona Distribution, which includes pgBackRest and a minimal web-ui. No one ever got fired for using Percona, etc.
- pgBackRest - Reliable PostgreSQL Backup & Restore
- pgBackRest - have you used it and what was your experience?
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How to backup database
Check out pgBackRest
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Use One Big Server
I found this approach pretty cool in that regard: https://github.com/pgbackrest/pgbackrest
- Moving from Oracle to Postgres, what should I know?
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How do you back up your databases?
Something like PG barman or pg backrest could be good for you on the Postgres side.
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Cloud SQL is not great
Backups are limited. These days, pgbackrest is the go-to backup solution for PostgreSQL, and having used it I am very impressed so far. It provides full backups, differential, and incremental, as well as archiving of WAL segments for point in time recovery. It allows great flexibility in schedules and destinations for backups, how long to keep backups for, how many full backups. For example, you can have backups made to a local disk, and other backups to an external S3-compatible bucket, each with their own settings and schedules (e.g., scheduled via cron).
What are some alternatives?
lizard - Lizard (formerly LZ5) is an efficient compressor with very fast decompression. It achieves compression ratio that is comparable to zip/zlib and zstd/brotli (at low and medium compression levels) at decompression speed of 1000 MB/s and faster.
Barman - Barman - Backup and Recovery Manager for PostgreSQL
7-Zip-zstd - 7-Zip with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard
wal-g - Archival and Restoration for databases in the Cloud
docker-postgres-wale - Postgres docker container with WALE-E installed
wal-e - Continuous Archiving for Postgres
pghoard - PostgreSQL® backup and restore service
postgres - Docker Official Image packaging for Postgres
spilo - Highly available elephant herd: HA PostgreSQL cluster using Docker
fpart - Sort files and pack them into partitions
deck-chores - A job scheduler for Docker containers, configured via labels.
IvorySQL - Open Source Oracle Compatible PostgreSQL.