PostgreSQL Consulting · London
PostgreSQL Consulting in London
PostgreSQL advice for London organisations, where the most common slow decline has an unglamorous cause. Updates and deletes leave dead rows behind for a background process to reclaim, and on a busy table where that process cannot keep up, the table grows steadily larger than its data while queries get slower for no visible reason.
Why this comes up
The problem
A frequently updated table occupies far more space than its row count justifies, and queries against it have gradually slowed.
What you get
What we deliver
- Bloat measured per table rather than assumed absent
- Autovacuum tuned for the tables that need it instead of the global default
- Long-running transactions identified, since these prevent cleanup entirely
- Query plans examined at production data volumes, not at development scale
- Index usage reviewed, as unused indexes cost writes and disk for nothing
- Connection handling assessed, because the limit is lower than most teams expect
Want this scoped for your business in London?
Thirty minutes, no charge, no sales script. You leave with a written summary of what postgresql consulting would actually involve — whether or not you use us.
Working in London
London
London clients usually come to us because they want senior people actually on their project rather than a large agency's B team, and because Midlands rates buy considerably more delivery per pound.
Clients here are usually replacing an agency, and want senior people on the work at rates that are not Central London rates.
Sectors we work with in London
- Financial Services
- Professional Services
- Technology
- Media
- Hospitality
- Retail
What we work with
Technologies and platforms
- PostgreSQL
- PgBouncer
- SQL
- pg_stat_statements
Who we work with
Industries we serve
- SaaS businesses
- Financial services
- Healthcare
- Retail
- Technology companies
Why us
Why London businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in London
Looking for the full picture? See our PostgreSQL Consulting services, everything we do in London or browse everything we do.
PostgreSQL Consulting in London — common questions
- Why does the table grow beyond its data?
- Because an update writes a new row version and leaves the old one to be reclaimed later. Where the cleanup process is configured for a quiet table and applied to a busy one, dead rows accumulate faster than they are removed and the table steadily inflates.
- What stops the cleanup working?
- Usually a long-running transaction. Nothing newer than the oldest open transaction can be reclaimed, so a session left idle in a transaction — frequently an application bug or an analyst's forgotten window — blocks cleanup across the entire database.
- Why test plans at production volume?
- Because the planner chooses differently as data grows. A query using an index at ten thousand rows may switch to a sequential scan at ten million, and a development database with a small sample gives no warning that the plan will change under real conditions.
- Do unused indexes matter?
- They cost on every write and consume disk and memory. Databases accumulate indexes added for a query that changed years ago, and the statistics views show which have never been used — removing those makes writes faster at no cost to any query anyone runs.
- Do you work with businesses across Greater London?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout London, including London and the surrounding Greater London area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of London businesses do you usually work with?
- Clients here are usually replacing an agency, and want senior people on the work at rates that are not Central London rates. Beyond that we work across Financial Services, Professional Services, Technology, Media, Hospitality and Retail.
- Do you cover the areas around London?
- Yes — we work throughout London, including Reading, Milton Keynes, Cambridge, Brighton. London is an urban area of roughly 9,000,000+, and we take on work across the wider Greater London region rather than the city boundary alone.
Talk to us about PostgreSQL Consulting in London
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise