Postgresql Services by Amoniac

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Updating PostgreSQL often gets postponed, after all, if it ain’t broke…

In fact, the newer PostgreSQL versions contain bug fixes and other tweaks that improve database performance. They also include fixes for security defects which is crucial for any database. Up-to-date versions are especially important when working with products databases.

What You Get With PostgreSQL

  • Speed: you get a ready-made, preconfigured database.
  • Full-time support: we manage physical and virtual infrastructures, OS, DBMS, and data backup.
  • Cost optimization: monthly payments instead of large infrastructure- and administration-related expenses.
  • Detailed SLA: we guarantee full access to cloud services in up to 99.98% of cases and bear the financial responsibility in the event of failure to comply with commitments.

What We Do

We offer database management services, as well as system administration and product maintenance. Our primary focus is at PostgreSQL, but we at Amoniac work with some alternatives, too. If you’re looking for an experienced, innovative, and result-oriented team for your business project, you’ve come to the right place.

Why Us:

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Tier III Data Centers

Our services are based on fault-tolerant data centers located in Europe.

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Flexible Pricing

Your pricing plan depends on the size and version of your database, level of access, and performance of a virtual machine.

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Expert Support

Experts specializing in high-load cluster database configurations are at service.

We work with different PostgreSQL versions and solve unconventional problems daily -- that’s why we can predict and prevent any possible issues.

Database support isn’t just a job, it’s what we love, and we are always ready to share our hard-earned knowledge and skills with you.

With Amoniac, you will use your funds more efficiently as you will only use our services when necessary.

To us, system administration is everything, and we are ready to do it all to get our clients’ databases work smoothly and reliably.

Dealing with urgent problems is just the first part of our partnership. We want to share our knowledge with clients and learn from them -- which is why you can be entirely sure that your database is in great hands.

What Is PostgreSQL?

PostgreSQL is an open-source object-relational database management system (DBMS). Available for many UNIX-like systems, including AIX, different BSD systems, HP-UX, IRIX, Linux, macOS, Solaris/OpenSolaris, Tru64, QNX, and Microsoft Windows.
PostgreSQL is based on the SQL language and conforms to the SQL:2011 standard.

PostgreSQL strengths are:

  • Reliable, high-performance replication and transaction mechanisms;
  • Extensible system of available programming languages: there are four procedural languages in the standard distribution (PL/pgSQL, PL/Perl, PL/Python и PL/Tcl), and additional PL/Java, PL/PHP, PL/Py, PL/R, PL/Ruby, PL/Scheme, PL/sh и PL/V8. Loading extension modules in C is also possible;
  • Inheritance;
  • The ability to index geometric objects and related PostGIS extension;
  • Built-In support of semi-structured data in JSON format (including indexing);
  • Extensibility (the ability to create new data types, index types, programming languages, extension modules, connect any external data sources).

You can check out the massivePostgreSQL documentation to see the full list.

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PostgreSQL reliability is a proven fact, considering the following features:

  • Full compliance with ACID principles - atomicity, consistency, isolation, data safety.
  • Atomicity -- a transaction is treated as a single logical unit, all of the changes are either saved as a whole or canceled altogether.
  • Consistency -- a transaction transfers the database from one consistent state (at the time the transaction starts) to another consistent state (at the time the transaction is completed). A database state is considered consistent when all restrictions on the physical and logical integrity of the database are fulfilled; while violation of integrity constraints during the transaction is allowed, all integrity constraints, both physical and logical, must be abided by.
  • Isolation -- concurrent transactions are isolated from each other with the help of a version control system;
  • Durability - PostgreSQL makes sure to save the results of successful transactions to the hard drive regardless of hardware failures.

Multiversion Concurrency Control (MVCC) is used to maintain data consistency during concurrent transactions when traditional databases use locking. MVCC means that each transaction sees a snapshot (a database version) of the data at the time the transaction started, despite the fact the database might already have been changed. This protects the transaction from inconsistent data changes that might have been caused by (other) concurrent transaction, providing transaction isolation. The main benefit of using MVCC over locking is that the MVCC read lock does not interfere with the write lock and therefore reading never interferes with editing and vice versa. Concurrent recording operations "interrupt" each other only while working with the same record.

Write-Ahead Logging (WAL) is a standard method for ensuring data integrity, preventing possible crashes. WAL's central concept is that changes to data files must be written only after those changes have been logged, that is, after log records describing the changes have been flushed to permanent storage. If we follow this procedure, we don’t need to flush data pages to disk on every transaction commit, because we know that in the event of a crash we will be able to recover the database using the log records.

With Point in Time Recovery (PITR), the database can be restored (using WAL) to its state at any point after a crash.

Replication also improves the reliability of PostgreSQL. There are several replication systems, for example, Slony, which is a free and most used solution that supports master-slave replication. Slony-II is expected to include a multi-master mode.

Data integrity is at the heart of PostgreSQL. In addition to MVCC, PostgreSQL supports referential integrity (using foreign key constraints).

The PostgreSQL development model is entirely transparent to anyone: all plans, problems, and priorities are openly discussed. Users and developers communicate via mailing lists. All patches and suggestions are thoroughly tested: a large number of beta testers helps fix minor bugs.

Because of the liberal license, PostgreSQL can be used, modified, and distributed by anyone free of charge for any purpose, be it private, commercial, or academic.

Clients
Edin Turcinhodzic
Category Manager Sweden & Norway

A very very positive experience from working with Alex and his team. We are for sure going to work more with them and looking forward to close some more successful projects.

Tim Cameron-Kitchen
Head Ninja

We've worked with a lot of developers, and Amoniac is now our first call for anything our internal team can't handle. Fantastic responsiveness, creativity to think around solutions, and they took the brief and ran with it. Couldn't have asked for any more, and I have no hesitation in recommending them.

Fredrik Teir
CEO and Founder

When the Amoniac guys contacted me, I had the prototype that didn’t work as I expected and a lot of ideas to implement. We reached an understanding, and they allocated the development team for my project, which was really comfortable to work with. The guys re-wrote my mobile app and wrote specs on the existent code. They helped me filter and prioritize my insights and then developed new features. Now my app works as I want. I like the guys for their flexibility and openness for new ideas and suggestions. Always a pleasure to work with pros.

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