About · The bench on Cedarcrest Dr, Nashville

Louder amps don’t fix a buzzing fret.

Plug a guitar with a high fret into a bigger amplifier and all you get is a clearer buzz. Doubling a database instance does the same to a missing index: the invoice gets louder and the query still rattles. Thackeray & Sons is a small house in Nashville that would rather sit with your slow log, ear close to the wood, until we can point at the exact spot the noise lives.

♭ A ♯ 440 HZ

What “in tune” means hereA p95 that holds still through your busiest hour — measured against the baseline we capture on day one, not against a feeling.

Book a listening call Read the house rules
Fig. 3 — the top drawer An open walnut drawer holding a brass tuning fork, soft pencils, a coiled guitar string and a printed query plan circled in gold ink, under a warm brass lamp
Struck before every walkthrough. Mostly for luck, partly to remind us what we’re listening for.
01 / Where the name comes fromTold briefly at every kickoff

Before the database, there was a fret

  • Margin note

    The “& Sons” came down with the habit and the lamp. We kept all three.

  • Margin note

    The front room faces west. By four in the afternoon the light on the bench turns the colour of a sunburst guitar top.

  • Margin note

    The tuning fork in Fig. 3 is real, slightly bent, and pitched a hair flat. We’ve decided that’s funny.

The name comes from a repair bench and a rule older than anyone who worked at it: nobody turns a peg until they’ve heard the buzz. You lay the instrument on the felt, pluck the string, lower your ear to the body and wait. A high fret rattles differently from a loose brace; a worn nut sounds different from both. Fix the wrong one and the guitar leaves the shop exactly as broken as it arrived — plus a bill.

Databases buzz the same way. A sequential scan across a table nobody indexed has a sound: a replica fan spinning up, a latency graph going amber at the same hour every evening. A lock queue piling up behind an un-batched ALTER TABLE has another. A bloated index that autovacuum quietly gave up on has a third. All three arrive in Slack as “the database is slow.” All three need different hands.

We kept the habit and swapped the instrument. The felt became a read-only replica; the ear became pg_stat_statements.

So that’s the work. We take read-only access, listen to your real workload long enough to hear where the noise actually lives, and change the one thing making it — an index, a rewritten join, a vacuum setting nobody has touched since launch week. Then we listen again. When the buzz is gone, we write down why, so the next engineer to open the case knows what was done and doesn’t undo it during a tidy-up.

The bench itself sits in a front room at 140 Cedarcrest Dr, in Nashville’s 37212: a walnut top worn pale where elbows rest, a brass lamp, a radiator that ticks all winter and a screen door that lets the cicadas in all August. The tuning travels over a secure connection to wherever your servers hum. The whiteboards, the coffee and the cutover rehearsals happen here.

02 / The top drawer, openedSix objects, six jobs

Everything in the drawer earns its keep

A repair bench says a lot about whoever works at it. Here’s ours, item by item — and what each one stands for once your database is lying on the felt.

Fig. 4 — laid out on the felt A top-down still life on navy felt: tuning fork, pencil on sketch paper, clipped printouts, a small kettle and a closed laptop, lit by a brass lamp
  1. 01
    Brass, pitched near A440

    The tuning fork

    The baseline. On day one we capture your p95, your top statements by total_exec_time and last week’s CPU curve. Every change after that is judged against this one note.

  2. 02
    2B graphite, cream stock

    A soft pencil

    Index trees and join orders get drawn by hand before anything is typed. If we can’t sketch why a plan is slow, we don’t understand it yet — and we don’t touch it yet.

  3. 03
    Real row counts

    A production-sized clone

    Every rewrite is timed on a copy with your actual data volumes and distribution. A query that flies on ten thousand rows can crawl on ten million; we only trust the bigger room.

  4. 04
    Bulldog-clipped

    The change list, printed

    Each statement we propose, in order, with the reason in plain English beside it. You read it line by line and initial it before a single one runs against your data.

  5. 05
    The thinner stack

    The reverse, written beside it

    Every forward step carries its rollback, and the rollback gets run on the clone the same afternoon. A way back you’ve only imagined isn’t a way back.

  6. 06
    Enamel, slightly dented

    The kettle

    Walkthroughs run forty minutes with your engineers, cameras on, plans open. Tea is assumed, questions are encouraged, and nobody is made to feel bad about the ORM.

03 / House rulesChalked, re-chalked, never rubbed out

Rules chalked above the bench

They’re written in chalk so the dust settles on the walnut and reminds us they’re there. None of them are clever. All of them have saved somebody a 3 a.m. page.

See how the rules shape each engagement
A hand initialling the margin of a printed change list with a brass fountain pen, its rollback sheet clipped beside it

  1. Hear it before you touch it

    No index is added on instinct. We read the workload first — slow log, plans, wait events — until the cause is a sentence, not a hunch.

  2. One change, then listen again

    Change three things at once and you’ll never know which one helped — or which one quietly hurt. We move a single peg and re-measure.

  3. Leave a note in the case

    Every index we ship gets a COMMENT ON naming the query it serves, so it survives the next well-meaning cleanup.

  4. Invited to read means read

    Audit credentials are read-only, full stop. Writes happen only from the signed change list, in a window you picked.

  5. Sometimes the amp is the answer

    Every so often the honest fix really is more memory. When that’s what we hear, we say so plainly — and tell you which instance class, and why.

  6. Pens down Friday at one

    The bench closes early on Fridays, so cutovers land Monday to Thursday, when everyone involved is rested and fully awake.

04 / Who the bench is cut forHonest in both directions

Ring us if your database sounds like this

A good repair shop tells you when an instrument belongs somewhere else. Here’s where we’re the right ears — and where we’d send you down the road.

Pull up a stool if…

It sounds familiar

  • You’re a SaaS team of a handful of engineers, and nobody’s job title says DBA.
  • You run PostgreSQL 12–17 or MySQL 5.7 / 8.0 — self-hosted, or on RDS, Aurora, Cloud SQL, Azure Database or Neon.
  • Your p95 creeps upward every evening around the same hour, and the dashboard turns the colour of a bruise.
  • A move to managed cloud has been postponed twice because nobody wants to own the cutover.
  • You’d rather pay one fixed invoice than watch a meter tick.
Probably another shop if…

It doesn’t

  • You need someone on call around the clock — we keep bench hours, Monday to Friday lunchtime.
  • Your data lives in Oracle, SQL Server or MongoDB; those instruments aren’t on our bench.
  • You’re after an open-ended monthly contract with a dashboard attached.
  • The fix has to land tonight. Call anyway — we’ll tell you where to look, even if we can’t take the job.

Not sure which column you’re in?

Describe the noise · (917) 414-1843
05 / Strike the first noteReplies within one working day

Bring us the query that rattles

Start with one unhurried call. Bring the query your team sighs at in stand-up, open its plan with us live, and we’ll tell you honestly whether an audit will pay for itself — or whether a single index will do.

Book a listening call Email us the slow log
Or reach the bench directly (917) 414-1843 info@thackeraysons.com Mon–Thu 8am–6pm · Fri to 1pm
Where most teams start

The Tuning

$3,850 fixed · 10 business days

A read-only audit of your PostgreSQL or MySQL workload and a ranked, written report — every finding with before-and-after plans and the SQL ready to paste. Invoiced net-15 once the report is in your inbox.

♭ A ♯ 440 HZ Book The Tuning